Contra Costa Herald

News Of By and For The People of Contra Costa County, California

Police seek two suspects in shooting homicide of young man at El Cerrito shopping center

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The suspects’ car is described as a gray Nissan Maxima, 2016 or newer. Surveillance camera video screenshot source: El Cerrito PD

Witnesses offer descriptions of vehicle, suspects

By El Cerrito Police Department

On August 23, 2026, at 12:17 PM, the El Cerrito Police received a call of a shooting in the parking lot of the Del Norte Plaza shopping center, located at 11299 San Pablo Avenue in El Cerrito. El Cerrito, Kensington and Richmond Police officers responded to the scene. They discovered that a young man had been shot in the parking lot, near Los Moles Restaurant. Although officers attempted to provide medical aid, the man died of his wounds.

Witnesses reported that the suspects became involved in an altercation with the victim at his car and shot him. After the shooting, the suspects fled the area in a dark colored sedan by driving southbound on S. 56th Street.

Witnesses described the suspects as follows:

Suspect #1 – Young black male adult, wearing a black mask and a black North face brand puffy jacket.
Suspect #2 – Young black male adult, wearing a hat and a black Nike brand jacket.

Police officers, detectives, and crime scene investigators were at the scene interviewing witnesses and collecting evidence.

According to a KTVU FOX2 report, the victim was 21 years old from Oakland. According to an ABC7 News report, it is the first homicide in the city in three years.

UPDATE: El Cerrito Officers have located additional information about the suspect vehicle. The suspects fled the homicide scene by driving northbound on S. 56th Street, then westbound on Potrero Avenue. They were last seen driving southbound on S. 55th Street from Potrero Avenue.

Suspect Vehicle: Gray Nissan Maxima, 2016 or newer model year

If any members of the community have information about this homicide, the El Cerrito Police encourage them to call the ECPD at (510) 237-3233.

Allen D. Payton contributed to this report.

Help shape Clayton’s Emergency Operations Plan Aug. 27

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In-person or online

By City of Clayton

The City of Clayton is updating its Emergency Operations Plan (EOP) — the official roadmap that guides how we prepare for, respond to, and recover from emergencies like wildfires, floods, earthquakes, and more.

Join us for an informative Community Engagement Meeting as we kick off this important (and lengthy) update process.

Thursday, August 27 at 7:00 PM

In-Person: Hoyer Hall (Clayton Community Library), 6125 Clayton Road

Virtual: Join via Zoom — find the link on the City’s calendar at www.claytonca.gov or at www.claytonca.gov/239/Police

What we’ll cover:

  • What is an Emergency Operations Plan?
  • The planning process & timelines
  • How you can engage and share feedback

The City of Clayton’s EOP was last revised in 2012. This important undertaking will bring our emergency preparedness framework in line with current best practices, ensuring the City is ready to respond effectively to a wide range of emergencies and disasters. The process involves close coordination with local, county, and state agencies, as well as community stakeholders, to create a plan that reflects the needs and resources of our entire community.

The City Council has approved a contract with Brenna Howell Emergency Management (Brenna Howell Emergency Management) to serve as the City’s consultant throughout this effort. Over the coming months, the update will include opportunities for community engagement, staff training exercises, and a thorough review of hazards, resources, and response procedures. This methodical approach is expected to conclude by the first quarter of 2027. We look forward to this important process and to delivering an updated, robust resource that will help keep our City and community safe and prepared for years to come.

Download the City of Clayton Emergency Operations Plan 2012 (PDF)

Learn more at Emergency Preparedness | Clayton, CA.

Your voice matters. Come learn about the process and help us build a stronger, more prepared Clayton.

We hope to see you there — in person or online!

Allen D. Payton contributed to this report.

S.F., Oakland men arrested for San Ramon armed robbery following pursuit, crash

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At apartment complex; held on $240K and $315K bail for this and other crimes, both have history of arrests

By Lt. Mike Pistello, San Ramon Police Department

On Tuesday, August 18, 2026, at approximately 6:49 p.m., officers from the San Ramon Police Department responded to an armed robbery at the Cobblestone Apartments, located in the 3900 block of Crow Canyon Road.

The victim reported that two male suspects, both armed with handguns, assaulted him and took items of value from his person. The victim sustained minor injuries, and the suspects fled the area in a silver sedan.

Using FLOCK technology, the suspect vehicle was identified as a 2015 Hyundai Sonata bearing California license plate 7HCL742. The vehicle information was disseminated to local law enforcement agencies.

The Hyundai was subsequently located by officers from the Oakland Police Department, resulting in a vehicle pursuit. The pursuit ended when the suspect vehicle crashed in the City of Oakland. Both suspects fled on foot but were apprehended by officers. They were identified as 22-year-old Isiah Sinclair Burns, Jr. of San Francisco and 27-year-old Joseph Vashonhenri Broussard of Oakland. During a search of the suspect vehicle, officers located a loaded firearm.

Burns and Broussard were subsequently booked into Santa Rita Jail by Oakland PD in relation to crimes committed within their jurisdiction.

San Ramon detectives responded to Oakland to process the vehicle for evidence. Ramey warrants were subsequently obtained for both suspects in connection with the armed robbery that occurred within San Ramon’s jurisdiction.

The San Ramon Police Department would like to thank the Oakland Police Department and California Highway Patrol for their assistance in this investigation.

According to the Alameda County Sheriff’s Office, the five-foot, 11-inch tall, 198-pound Burns is Black, being held on $240,000 bail for this and other crimes and is scheduled to appear at the Wiley W. Manuel Courthouse in Oakland on Friday, Aug. 21 at 9:00 p.m. in Dept. 112 for arraignment.

According to localcrimenews.com, this is his fifth arrest since 2023 by San Francisco Police and Sheriff’s Departments for multiple firearms charges and other crimes including conspiracy to commit a crime and resisting, obstructing or delaying a Peace Officer.

According to the Alameda County Sheriff’s Office, the five-foot, eight-inch tall, 180-pound Broussard is Black, being held on $315,000 bail for this and other crimes and is also scheduled to appear at the Wiley W. Manuel Courthouse on Friday, Aug. 21 at 9:00 p.m. in Dept. 112 for arraignment.

According to localcrimenews.com, he has a history of five arrests dating back to 2017 by S.F. Police and Sheriff’s Departments for multiple firearms charges, plus burglary, hit-and-run resulting in injury and resisting, obstructing or delaying a Peace Officer.

This incident remains under active investigation. Anyone who may have witnessed the incident or has information that may assist investigators is asked to contact the San Ramon Police Department Investigations Division at (925) 973-2700.

Allen D. Payton contributed to this report.

Relative of victims arrested for murder, arson in Richmond double fatality fire

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Richmond resident Sergio Rivera-Vega was arrested for murder and arson. Graphic & photo source: Richmond PD

Claims lives of 47-year-old man, 5-year-old boy

32-year-old being held on $2.5 million bail

By Lt. Joseph England, PIO, Richmond Police Department

Richmond, CA – On August 18, 2026, at approximately 8:16 p.m., Richmond Police Department officers responded to the 200 block of 15th Street to assist the Richmond Fire Department with a residential structure fire.

At approximately 8:47 p.m., while emergency personnel remained at the scene, Richmond Police dispatch was notified by the Richmond Fire Department of a second residential structure fire approximately two houses away from the original fire.

Richmond Fire personnel immediately responded to the second residence, where firefighters located four victims inside the home: a 47-year-old man, a 33-year-old woman, a 5-year-old boy, and a 2-year-old girl.

Emergency personnel immediately began providing medical aid. Tragically, the 47-year-old man succumbed to his injuries at the scene.

The remaining three victims were transported to local hospitals for treatment. Despite the efforts of medical personnel, the 5-year-old boy later succumbed to his injuries at the hospital. The 33-year-old woman and the 2-year-old girl remain hospitalized in critical condition.

The second fire was immediately considered suspicious because it occurred only two houses away from the first fire and began within a short period of time while emergency personnel were still responding to the first incident.

Due to the suspicious circumstances, detectives from the Richmond Police Department’s Homicide Unit responded to the scene and immediately began investigating. Detectives conducted interviews, collected evidence, and worked closely with fire investigators to process the scene.

During the investigation, detectives identified 32-year-old Sergio Ivan Rivera-Vega (born 8/02/1994) as the suspect in the second fire. Rivera-Vega is a relative of the four victims and resided at the home.

While detectives were conducting their investigation, Rivera-Vega was located near the scene and taken into custody without incident. He was subsequently booked into the Richmond Police Department jail on charges of murder and arson causing great bodily injury.

This unimaginable tragedy has taken the lives of a man and a young child while leaving a woman and another young child fighting for their lives. The Richmond Police Department and Richmond Fire Department extend their deepest condolences to the victims, their loved ones, and everyone affected by this devastating incident.

The Richmond Police Department is committed to conducting a thorough and comprehensive investigation. Detectives will continue working closely with the Richmond Fire Department and the Contra Costa County District Attorney’s Office to ensure that all available evidence is examined, the full circumstances surrounding this incident are established, and justice is pursued for the victims and their family.

Arrested: Sergio Rivera-Vega, 32 yrs, Richmond Resident

Charges: Two Counts of PC 187(A) – Murder and Two Counts of PC 451(A) – Arson Causing Great Bodily Injury

Bail: $2,500,000.00

According to the Contra Costa County Sheriff’s Office, the five-foot, four-inch tall, 140-pound Rivera-Vega whose race is listed as unknown, is being held in the Martinez Detention Facility.

Allen D. Payton contributed to this report.

Police confiscate “imitation weapon” brought by student to Liberty High in Brentwood

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Police responded to Liberty High School Wednesday morning, Aug. 19, 2026. Photo source: Liberty High School Facebook

By Brentwood Police Department

The Brentwood Police Department is aware of a report involving a possible weapon at Liberty High School today, Wednesday, August 19, 2026.

School administrators immediately notified law enforcement, and officers responded to investigate. The item involved was determined to be an imitation weapon and was confiscated. The investigation determined there was no active threat to students, staff or the campus, and the matter was resolved without disruption to the school day.

We appreciate the students, staff, and community members who promptly report safety concerns. Reports of possible threats are taken seriously and investigated in coordination with our school partners.

Because this incident involves a student, no additional information will be released at this time.

The Brentwood Police Department remains committed to working with our schools to help maintain a safe and secure learning environment.

Pittsburg Police Department promotes three to new leadership positions

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New Pittsburg Police Department Captain Will Hatcher, Lieutenant Cory Smith and Sergeant Jerry Sanchez. Photos: Pittsburg PD

By Toni Baldazo, City of Pittsburg Community Engagement Officer

This week was an exciting week for the Pittsburg Police Department as Chief Phil Galer held an oath of office ceremony recognizing three well-deserved promotions. Please join us in congratulating Captain Will Hatcher, Lieutenant Cory Smith and Sergeant Jerry Sanchez, Jr.

Captain Will Hatcher

Captain William Hatcher began his career with the Pittsburg Police Department more than two decades ago. He was promoted to Sergeant in 2013 and served several key leadership assignments, including SWAT Team Leader and supervisor of the Street Team, Narcotics Unit, and Investigations Division. In 2021, he was promoted to Lieutenant, serving as a Watch Commander, SWAT Commander, and overseeing both the Administrative Services and Investigations divisions.

Captain Hatcher is a graduate of the Sherman Block Leadership Institute and California POST Command College and holds two master’s degrees in criminal justice and public safety leadership. In January 2027, he will represent the Pittsburg Police Department at the FBI National Academy.

Throughout his career, Captain Hatcher has remained committed to serving the Pittsburg community and the men and women of the Department. As he begins his new role as Captain, he looks forward to continuing to lead with integrity, developing, and investing in others, and contributing to the Department’s continued progress and a safer, stronger Pittsburg.

Pittsburg Police Chief Phil Galer administers the oath of office to the three department leaders on Monday, Aug. 17, 2026. Photo: Pittsburg PD

Lieutenant Cory Smith

Cory Smith began his career in public service nearly 25 years ago, serving four years on active duty with the United States Air Force, including overseas deployments in support of combat operations. Following his military service, Cory pursued a career in law enforcement and was sworn in as a Pittsburg Police Officer in 2006.

During his 20 years with the Pittsburg Police Department, Cory has served numerous specialized assignments, including Field Training Officer, Honor Guard member, Perimeter Response Team member, Tactical Medic, SWAT Operator, and Motor Officer. In 2021, Cory promoted to Sergeant, serving as a Patrol Supervisor, SWAT Team Leader, and supervisor of the Special Investigations Unit. He later joined Professional Standards as the Hiring and Training Sergeant, FTO Coordinator, and Department Training Coordinator, where he focused on developing personnel, strengthening recruitment and training, and improving Department operations.

Throughout his career, Cory has remained committed to developing others, strengthening the Pittsburg Police Department, and serving the community. As he promotes to Lieutenant, he looks forward to continuing that commitment and leading with the values that have guided him throughout his career: trust, accountability, and investing in people.

Pittsburg Police Chief Phil Galer (send from left) is joined by newly promoted department leaders, Sgt. Jerry Sanchez, Lt. Cory Smith and Captain Will Hatcher after being sworn in. Photo: Pittsburg PD

Sergeant Jerry Sanchez

Jerry Sanchez joined the Pittsburg Police Department in August 2021, bringing eight years of law enforcement experience and a strong personal connection to the Pittsburg community. Since joining the Department, Jerry has served as a Field Training Officer, Traffic Officer, Fatal Collision Investigator, SWAT Team member, and Marine Patrol Team member.

Prior to joining Pittsburg PD, Jerry began his law enforcement career with the Oakland Police Department in 2013. During this time, Jerry served as a Motor Officer, EVOC instructor, Patrol Rifle Officer, Field Training Officer, Traffic Investigator, and SWAT Team member.

Jerry has twice been elected President of the Pittsburg Police Officers’ Association, reflecting the trust and confidence of his peers. As he promotes to Sergeant, Jerry looks forward to using his experience to mentor and develop officers, support those he leads, and continue commitment of service to the Pittsburg community.

A post on the Department’s Facebook page on Monday, Aug. 17th reads, “Today was a proud day for the Pittsburg Police Department as Chief Phil Galer held a promotional swearing-in ceremony recognizing three well-deserved promotions. Each of these leaders has demonstrated dedication, professionalism, and a commitment to serving our Department and the Pittsburg community. Congratulations on your well-earned promotions! We look forward to your continued leadership and service to our Pittsburg community!

The Pittsburg Police Department has no greater honor than to keep our citizens safe and to serve our community. We pledge to continue our partnership with the community, build valued relationships based on mutual respect and open dialog through professionalism, excellence and trust. For more information visit Police Department | City of Pittsburg.

Lafayette Police lock down Acalanes High, middle school due to “swatting” calls Monday

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Acalanes High School and Stanley Intermediate were placed on lockdown by Lafayette police Monday, Aug. 17, 2026. Photo sources: acalanes61.com and Stanley Wildcats PTA Facebook page

By Allen D. Payton

The Lafayette Police Department placed Acalanes High School and Stanley Intermediate School on lockdown Monday afternoon, Aug. 17, 2026, due to an anonymous called in threat.

At 12:59 p.m. and 1:29 p.m. the Department posted alerts on Nixle, a service that sends out text messages about critical events in the community, with links on the department’s Facebook page.

They read:

“Officers are working a potential threat that was called into Acalanes High School by an annomoyous [sic] automated call. The lock down is a precaution. Avoid the area. Updates will be sent via Nixle.

“Oficers [sic] are on site and have drones over the school.”

and

“POLICE ACTIVITY – Officers are at Stanley Intermediate School while they determine if there is a viable threat that was called in.   It appears to be a swatting call, but are taking it seriously.

Officers will remain on campus and updates will be sent via Nixle.

If you see something call 9-1-1

94549TIP@gmail.com
925-284-5010 24 hour dispatch.”

By 1:47 p.m. and 1:52 p.m. All Clear messages were posted.

They read:

“All Clear – Acalanes High School Lockdown has been lifted. officers have completed a thorough search of the school, campus clear.

UPDATE: School Campus Cleared

Law enforcement officers have completed a thorough search of the school and determined that the campus is clear. There is no active threat to students, staff, or the surrounding community.

Officers will remain on site as a precaution while the incident is investigated. Preliminary information indicates this was likely a ‘swatting’ call—a false report intended to prompt a large emergency response.

Thank you for your patience and cooperation.”

and:

“All Clear- Stanley Intermediate School lockdown has been lifted, officers have completed a search of the school.

UPDATE: School Campus Cleared

Law enforcement officers have completed a thorough search of the school and determined that the campus is clear. There is no active threat to students, staff, or the surrounding community.

Officers will remain on site as a precaution while the incident is investigated. Preliminary information indicates this was likely a ‘swatting’ call—a false report intended to prompt a large emergency response.

Thank you for your patience and cooperation.”

According to the FBI, “Swatting is the malicious tactic of making hoax calls or reports to emergency services, typically feigning an immediate threat to life. Swatting is intended to draw a large response from SWAT teams or other law enforcement resources to an unsuspecting victim’s location, causing chaos and the potential for injury or violence.

“Targets of swatting often include high-profile public figures, as well as schools, hospitals, places of worship, and centers of mass transportation, but anyone can be a victim. A swatting incident may be an isolated event targeting one victim or part of a larger coordinated effort to target multiple victims.”

Serial Lafayette residential burglary suspect from Martinez arrested

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Lafayette Police arrested the burglary suspect in Martinez on Aug. 14, 2026. Photos: Lafayette PD

Held on $516K bail, has history of arrests, owns business in Martinez; multi-agency effort

By Lafayette Police Department

Earlier last week, three residential burglaries occurred in Lafayette. Lafayette PD identified the suspect who committed them. On Tuesday Aug. 11, 2026, Lafayette detectives went to a home in the 3800 block of Alhambra Way in Martinez to serve a search warrant in connection to the cases.

The suspect fled after seeing police. Contra Costa Sheriff’s Office, Walnut Creek PD, Martinez PD and East Bay Regional Park Police assisted in the search for the suspect, who was not located. Property stolen in the burglaries was recovered in the house. On Wednesday, Lafayette detectives and the Sheriff’s Office special enforcement unit J-Team took the suspect, who was driving a stolen vehicle, into custody in Walnut Creek.

Contra Costa Sheriff’s Deputies assist in the arrest at the suspect’s home in Martinez. Photo: Lafayette PD

The suspect is identified as 34-year-old Kohlton Shawn Kumnick of Martinez (born 3/6/1992). He was booked into the Martinez Detention Facility on burglary, vehicle theft, possession of stolen property, felon in possession of a firearm, grand theft, identity theft, resisting arrest, and narcotic charges. He is being held in lieu of $220,000 bail.

According to the Contra Costa County Sheriff’s Office, the six-foot, three-inch tall, 205-pound suspect is Hispanic and being held on $516,000 bail and his next court appearance is scheduled for Wednesday, Aug. 19th at 1:30 p.m. in Martinez Superior Court Dept. 5.

According to localcrimenews.com, Kummick is White and has a history of arrests by multiple agencies dating back to 2013 for crimes including rape by threat, battery with serious bodily injury, battery on a peace officer, assault with any means of force likely to produce great bodily injury, inflicting corporal injury on spouse or cohabitant, false imprisonment by violence, child endangerment, vehicle theft, evading police officer with wanton disregard for safety, drug possession and DUI. His most recent arrest prior to this was on April 10, 2026, for hit and run resulting in property damage, DUI – drugs and alcohol and drug possession.

According to Bizapedia, he is the sole principal of Kumnick Electric, LLC located in Martinez and according to contractorlicenseca.com, he’s a licensed contractor.

The investigation is ongoing. Anyone with any information is asked to contact the Lafayette Police Department at (925) 284-5010. Tips can be emailed to: 94549tip@gmail.com.

Allen D. Payton contributed to this report.

Former Pleasant Hill Tourism district V.P. faces felony grand theft embezzlement, bribery charges

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Viola Ncube. Source: LinkedIn

Following $55,000 loss, year-long investigation; worked remotely

By Pleasant Hill Police Department

After a year-long criminal investigation, felony charges have been filed against a former employee for the Pleasant Hill Tourism Improvement District, known as Visit Pleasant Hill, in connection with an embezzlement and bribery scheme.

In July 2025, the City of Pleasant Hill received a report from a contracted company regarding possible fraud involving former Tourism Improvement District Vice President of Sales and Marketing Sibongile Viola Ncube. The Pleasant Hill Police Department subsequently began an investigation.

The Pleasant Hill Police Department determined that Ncube overcharged invoices and bills paid by the Tourism Improvement District (PHTID) and received unauthorized monetary kickbacks. The fraudulent activity occurred between September 2022 and July 2025 and resulted in an estimated loss of approximately $55,000.

The Pleasant Hill Police Department requested assistance from the Contra Costa County District Attorney’s Office, including a forensic review of bank statements and related financial records. Following its review, on July 24, the Contra Costa County District Attorney’s Office filed two felony charges against Ncube, 641.3(a) PC – Commercial Bribery and 508 PC – Grand Theft Embezzlement.

Ncube is scheduled to be arraigned in court later this month.

The PHTID was formed by the City Council in January 2017. According to the Visit Pleasant Hill 2024-25 Annual Report the District assesses all lodging businesses available for public occupancy located within the boundaries of the City of Pleasant Hill. According to the organization’s LinkedIn profile, it is the “Destination marketing organization advancing Pleasant Hill’s visitor economy,” which, according to their Facebook page, “provides official visitor information and promotes local businesses, experiences, and events in Pleasant Hill, CA.”

According to her LinkedIn profile, Ncube worked in the position with Visit Pleasant Hill remotely from May 2023 to August 2025, after starting as Director of Sales & Marketing from April 2020 to April 2023. She has since worked remotely on a contract as Director – AI, Sales & Marketing for Aspire Hospitality from Aug. to Oct. 2025 and now works as Director of Sales & Marketing Omni Hotels & Resorts, full-time since Oct. 2025.

She earned a MBA in Hotel, Restaurant & Tourism Management from Oxford Brookes University in 2003 and an Associate’s degree in Hospitality, Restaurant & Tourism Management from City St George’s, University of London in 2000. Ncube also earned a credential in Advanced AI in Marketing from the Digital Marketing Institute in 2025 and a Diversity Equity and Inclusion Certified Professional from Destinations International Issued in 2022.

Her Facebook page shows Ncube’s last post was in June 2025. It also shows she lives in Los Angeles, is the Founder and CEO of My Black Beauty Box and The Black Book Consultant, still works for Visit Pleasant Hill, and references the Bible verse Isaiah 55:5.

According to an undated report by Black Meetings & Tourism, “Viola has held VP and Director roles specializing in the luxury hotel brands, holding key positions such as Regional Sales Manager with Accor Hotels (3200 hotels), then moving to Director of Sales with the prestigious hotel group Red Carnations (16 global hotels) before joining US based L.E. Hotels (400+hotels) as Director of Business Development – EMEA. Viola then joined the luxury Pineapple Hotels firm as Director of Corporate Sales before being head-hunted in 2011 to set-up Global Hospitality Services for a private investor, a hotel sales & marketing representation company, where she held the position of Vice President.

“Viola Ncube founded The Black Book Consultant in 2017, a boutique full-service management, sales & marketing consulting agency specializing in a curated selection of luxury hotels and DMO’s worldwide. The Black Book Consultant has since acquired several contracts within its first few years of operation, including managing the $300 million dollar opening of Svart.no and Melody Maker Cancun. Viola is currently contracted as VP of Sales & Marketing with Stay Pleasant Hill, the tourism district for the city of Pleasant Hill, CA.

“In 2012, Viola founded iROCK! UK, a social enterprise, an empowerment program, mentoring women into employment & business enterprise.”

The Pleasant Hill Police Department extends its appreciation to the Contra Costa County District Attorney’s Office for its thorough forensic review and assistance throughout the investigation.

Allen D. Payton contributed to this report.

Martinez man charged with murder in stabbing death, faces special circumstance allegation

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Suspect Marcos Eduardo Iriarte-Valdez and victim Todd Stewart. Photo sources: (left) Martinez Police, (right) Blue Lives Matter.

Committed during burglary while out on conditional release; pleads not guilty

Faces life without parole

Now, labeled by Homeland Security as “criminal illegal alien”

By Ted Asregadoo, PIO, Contra Costa County District Attorney’s Office

Martinez, California – On Wednesday, August 12, 2026, the Contra Costa County District Attorney’s Office filed a felony complaint charging 36-year-old Marcos Eduardo Iriarte-Valdez of Martinez with the murder of Todd Stewart of Martinez, who was 68 years old at the time of his death.

On August 6, 2026, at approximately 5:10 pm, Iriarte-Valdez stabbed Todd Stewart to death with a knife while committing a residential burglary. The Martinez Police Department quickly identified and located Iriarte-Valdez with assistance from the public and through multiple investigative sources. This included video surveillance capturing events related to the crime, as well as physical evidence processed by the Contra Costa County Sheriff’s Office Crime Lab. (See related article)

On August 11, 2026, the Martinez Police Department presented the case to the Contra Costa County District Attorney’s Office for review. That same day, the District Attorney’s Office filed a criminal complaint charging Iriarte-Valdez with one count of murder for the unlawful killing of Todd Stewart.

The complaint also includes three additional enhancements to the murder charge:

  • Killing during a burglary: The District Attorney’s Office alleges the murder took place while the defendant was committing, attempting, or fleeing a burglary. This special allegation, if found true by a jury, means the defendant could face life in prison without the possibility of parole.
  • Use of a knife: The complaint alleges that Iriarte-Valdez personally used a knife during the commission of the crime, which qualifies as a serious felony enhancement under state law.
  • Committed while out on conditional release: At the time of the killing, Iriarte-Valdez was out of custody on electronic monitoring, as ordered by the court, in a separate, unrelated burglary case.

Contra Costa County District Attorney Diana Becton said, “Our office will pursue this case with diligence and integrity to hold Iriarte-Valdez fully accountable under the law for this devastating act of violence. Our thoughts are with the victim’s loved ones and the larger community as they navigate this unimaginable loss. Our Victim-Witness Assistance Program is available to guide the family members through the criminal justice process and connect them with the services and support they may need.”

Iriarte-Valdez was arraigned Thursday in Contra Costa Superior Court, pleading not guilty to the murder charge and denying all enhancements. Judge David Goldstein, who presided over the arraignment, called the defendant “a risk to public safety” and ordered him held without bail. The case returns to court September 9th at 8:30 am before Judge Michael Nieto in Richmond to set a preliminary hearing date.

According to charging documents, the suspect faces life without parole for the murder charge. 01-26-04140 – Charging Document

As previously reported by FOX News and ABC7 Eyewitness News, the Department of Homeland Security has labeled Iriarte-Valdez a “criminal illegal alien” as the agency had placed an immigration detainer on him on Sept. 23, 2025.

In addition, according to the California Globe, “On August 8, 2026, ICE placed a detainer on him with the Contra Costa County Jail.”

Case No. 01-26-04140 | The People of the State of California v. Marcos Eduardo Iriarte-Valdez

Allen D. Payton contributed to this report.