Contra Costa Herald

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

Contra Costa Sheriff’s Marine Patrol arrests suspect fleeing on the Delta in stolen boat

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The suspect, Edward Stiverson, flees on the Delta in a stolen boat on July 3, 2026. Source: CCC Sheriff’s Office STARR 3 helicopter video screenshot.

Has history of arrests dating back to 20214 including three this year

By Jimmy Lee, Director of Public Affairs, Contra Costa County Office of the Sheriff

On Friday, July 3, 2026, the Contra Costa Sheriff’s Office received a report about a stolen boat on Bradford Island. Sheriff’s Office helicopter STARR 3 located the vessel and directed Marine Patrol and patrol deputy sheriffs to the suspect who was walking away after stopping the boat. The suspect immediately ran back to the vessel after deputies tried to stop him. The suspect fled in the stolen boat to Bethel Island and hid under a dock house. Marine Patrol Unit deputies arrived shortly after to search for the suspect, who was eventually located and taken into custody.

He is identified as 56-year-old Edward W. Stiverson of Bethel Island (born 1/21/70). He was booked into the Martinez Detention Facility on the following charges: vehicle theft, receiving stolen property, obstructing a peace officer, and probation violation. He is being held without bail.

Stiverson and the Marine Patrol Unit arrive at their destination. Source: CCC Sheriff’s Office STARR 3 helicopter video screenshot.

According to localcrimenews.com, Stiverson is White and has a history of arrests by Contra Costa Sheriff’s Deputies and Antioch Police dating back to 2014. He was charged with crimes including murder, assault with a deadly weapon or with force likely to produce great bodily harm, inflicting corporal injury on a spouse or cohabitant, false imprisonment by violence, battery on a spouse, cohabitant, or former spouse, receiving stolen property – motor vehicle, taking a vehicle without the owner’s consent, and for various drug charges.

According to the Sheriff’s Office, the six-foot tall, 166-pound Stiverson is Hispanic is being held in the West Re-Entry Treatment and Housing facility and his next court appearance is scheduled for Sept. 30 at 8:30 a.m. in Delta Court, Pittsburg Dept. 4.

(See video. Does not contain any audio)

Contra Costa Coroner’s inquest jury finds death of 2025 Brentwood woman following arrest an “accident”

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Photo source: Yolanda Bustos Ramirez’s obituary.

By Jimmy Lee, Director of Public Affairs, Contra Costa County Office of the Sheriff-Coroner

At the request of the Contra Costa County District Attorney on April 17, 2026, Sheriff-Coroner David Livingston held an inquest into the death of 72-year-old Yolanda Ramirez of Brentwood on July 15, 2026. This incident occurred on October 3, 2025, in Contra Costa County, while she was in the hospital following her arrest by Brentwood Police on Sept. 26, 2025. (See related articles here, here and here)

The proceedings took place at 9:00 AM at the Wakefield Taylor Courthouse at 725 Court Street, Martinez, California.

The purpose of the inquest was to present the facts of the incident to a jury for their deliberation and finding on the manner of death.

Sheriff-Coroner David O. Livingston announced on Wednesday, July 15, that a coroner’s jury reached a finding in the death of Ramirez. The finding of the jury is that the manner of death is accident.

The coroner’s jury reached the verdict in the inquest after hearing the testimony of witnesses called by Hearing Officer Laura Pagey.

A coroner’s inquest, which Sheriff-Coroner Livingston convenes in fatal incidents involving law enforcement personnel, is a public hearing during which a jury rules on the manner of a person’s death. Jury members can choose from the following four options when making their finding: Accident, Suicide, Natural Causes or At the hands of another person other than by accident.

The inquest was open to the public and members of the media were invited to attend. However, no photographs, audio recordings or videos could be taken during the proceedings.

Allen D. Payton contributed to this report.

Contra Costa County-wide protocol invoked for in-custody death of Rio Vista woman

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Arrested for outstanding DUI warrant July 9th by Antioch Police

By Jimmy Lee, Director of Public Affairs, Contra Costa County Office of the Sheriff

On Friday, July 10, 2026, at about 12:24 AM, a deputy sheriff at the West County Detention Facility was conducting safety checks when she saw an unresponsive inmate who had a ligature around her neck.

Deputies immediately began life-saving measures while Health Services medical staff at the facility responded and continued life-saving efforts. The fire department and an ambulance also responded. The inmate was later pronounced deceased at the scene.

The inmate is identified as 59-year-old Robi Lynn Perley, a white female, of Rio Vista. Perley, who had an outstanding arrest warrant for driving under the influence and probation violation, was taken into custody yesterday by the Antioch Police Department. She was booked into the Martinez Detention Facility at about 1:30 PM.

According to Antioch Police CitizenRIMS, Perley was five-feet nine inches tall, 135 pounds and was arrested at 12:05 p.m. in the 5700 Block of Lone Tree Way on the misdemeanor outside warrant. Case Number: 26-6379.

The county-wide law enforcement involved fatal incident protocol was invoked and the investigation into this in-custody death is being conducted by the Contra Costa Sheriff’s Office and the Contra Costa D.A.’s Office.

Anyone with any information on this incident is asked to contact the Sheriff’s Office Investigation Division at (925) 313-2600. For any tips, please email: tips@so.cccounty.us  or call (866) 846-3592 to leave an anonymous voice message.

Allen D. Payton contributed to this report.

Bay Point homicide under investigation, Sheriff seeks 35-year-old suspect

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Avery Alexander Gibbs is wanted for the Bay Point homicide on Friday, July 3, 2026. Photo: CCC Sheriff

Transient Avery Alexander Gibbs shot “several individuals”, “should not be approached”; has history of arrests

By Contra Costa County Sheriff’s Office

This morning, Friday, July 3, 2026, at about 1:30, Muir Station deputy sheriffs were dispatched to an unknown problem on Olivia Lane in Bay Point. The call was later reported to be ‘shots fired.’

While enroute to the location, deputies were flagged down by several individuals who were injured at the location.

Deputies arrived at the scene and located an unresponsive person who was later transported to a local hospital. The victim was later pronounced deceased at the hospital. He is not being identified pending next of kin notification. One other person was transported to the hospital.

Detectives from the Sheriff’s Office Homicide Unit and Crime Lab personnel responded to the scene and the investigation is ongoing.

Detectives have identified the suspect as 35-year-old Avery Alexander Gibbs, a transient. Gibbs should not be approached and anyone seeing him should call 9-1-1.

Anyone with any information on this incident is asked to contact the Investigation Division at (925) 313-2600 or through Sheriff’s Office dispatch at (925) 646-2441. For any tips, email: tips@so.cccounty.us or call (866) 846-3592 to leave an anonymous voice message.

According to localcrimenews.com, Gibbs is Black, from San Pablo and has a history of arrests dating back to at least 2016. He was arrested by multiple agencies for crimes including human trafficking of a victim under 18, derive income from earnings or proceeds of a minor prostitute, pandering: other of a person 16+ and threats of violence.

Allen D. Payton contributed to this report.

Contra Costa Sheriff, DA investigate in custody death of 40-year-old Walnut Creek man at Martinez Detention Facility

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By Jimmy Lee, Director of Public Affairs, Contra Costa County Office of the Sheriff

On Thursday, June 25, 2026, at about 9:06 AM, a deputy sheriff at Martinez Detention Facility intake discovered a male inmate unresponsive in a room.

Health Services medical staff at MDF were immediately requested to respond. Deputies began life-saving measures until medical staff took over. The fire department and an ambulance also responded to MDF. The inmate was later pronounced deceased by paramedics.

The inmate is identified as 40-year-old Patrick Robert Smith who was White. He was arrested by Walnut Creek PD and booked into MDF on June 24, 2026, at about 10:00 AM. Smith was booked on narcotics charges.

According to the Walnut Creek Police Department, Smith was arrested at 8:45 AM in the 1800 Block of North Main Street.

The county-wide law enforcement involved fatal incident protocol was invoked and this incident is being investigated by the Contra Costa Sheriff’s Office and the Contra Costa D.A.’s Office.

Anyone with any information on this incident is asked to contact the Sheriff’s Office Investigation Division at (925) 313-2600. For any tips, please email: tips@so.cccounty.us or call (866) 846-3592 to leave an anonymous voice message.

Allen D. Payton contributed to this report.

Contra Costa Sheriff’s Office temporary per-diem Deputy arrested

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By Jimmy Lee, Director of Public Affairs, Contra Costa County Office of the Sheriff

The Contra Costa County Office of the Sheriff recently discovered criminal conduct involving an employee at its Property Services Unit office in Concord.

Detectives launched an investigation into the conduct. During the investigation, detectives obtained a search warrant for the employee’s residence and as well as an arrest warrant.

This afternoon, detectives arrested the employee who was involved in thefts from the Property Services Unit.

He is identified as 62-year-old Kevin Ray Lee of Martinez. He was booked into the Martinez Detention Facility on four felony charges: burglary, receiving stolen property, embezzlement and possession of an assault weapon. He is being held in lieu of $160,000 bail.

Lee joined the Contra Costa Sheriff’s Office in May 1990 as a Deputy Sheriff and later became a Temporary Deputy Sheriff (Per-Diem) in 2012 and was assigned to the Property Services Unit.

In light of this incident, the Contra Costa Sheriff’s Office will request the California Commission on Peace Officer Standards and Training to conduct an independent audit of the Property Services Unit.

According to the Sheriff’s Office, Lee is Asian/Pacific Islander and bonded out of custody as of June 17th at 2:18 AM.

“All Sheriff’s Office employees are held to the highest standards and any employee who is involved in criminal conduct will be held accountable,” said Contra Costa Sheriff David Livingston. “This matter was taken seriously, and a thorough investigation was immediately launched once we learned about it.”

One of two Lafayette shoplifters arrested following pursuit, crash

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Suspects drive wrong way; assistance from multiple agencies includes two helicopters, Sheriff’s K-9

43-year-old from Oakland has history of arrests

By Lafayette Police Department

On Tuesday afternoon, June 2, 2026, at about 2:13, Lafayette police officers responded to a business on the 3500 block of Mt. Diablo Blvd. for a report of two shoplifters who stole items and then fled in a silver-colored Honda.

On Pleasant Hill Road, the suspect vehicle drove past a Lafayette Police officer who attempted to stop the car. The Honda fled leading the officer on a pursuit which the officer terminated and pulled over when the suspect vehicle drove north in the southbound lanes.

The officer later came upon a collision involving the Honda and another vehicle a short distance away. The suspects fled on foot.

Officers from the Orinda Police Department and deputy sheriffs from Valley Station responded to set up a perimeter and help search for the suspects. Helicopters from the California Highway Patrol and East Bay Regional Park District Police also provided assistance.

Pleasant Hill Road was closed at Springhill Road and Green Valley Drive.

A Contra Costa Sheriff’s Office police K-9 located one suspect who was taken into custody and booked into the Martinez Detention Facility. Another suspect remains outstanding. The two occupants in the car that was struck by the suspect vehicle were taken to a local hospital as a precaution.

According to a report on X (Twitter) by Henry K. Lee of KTVU FOX 2, the business is the BevMo and William Ware, age 43, was arrested.

According to the Contra Costa County Sheriff’s Office, the five-foot, 11-inch tall, 210-pound William Pierr Ware, born 9/26/1982 is Black and being held in the West County Detention Facility on no bail.

According to localcrimenews.com, he lives in Oakland and has a history of arrests dating back to 2021 by multiple agencies for crimes including grand theft, organized retail theft, burglary, receiving stolen property, evading with wanton disregard for safety and resisting, obstructing and/or delaying a peace officer.

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.

Safety tips for Boating Season

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The Contra Costa County Sheriff’s Marine Unit Officers assist boaters in the Delta. Photos: CCCSO

By Jimmy Lee, Director of Public Affairs, Contra Costa County Office of the Sheriff

Memorial Day weekend marks the traditional start of boating season on the Delta. The Contra Costa County Office of the Sheriff is urging all boaters to stay safe while enjoying the water.

“Many boating accidents can be avoided by planning ahead,” said Contra Costa Sheriff David Livingston. “80% of boating fatalities could have been prevented by wearing a life jacket. Fol-lowing the law and these tips could help you stay safe on the water.”

California Boater Card Required – Anyone who operates a motorized vessel must carry a California Boater Card. Learn more at californiaboatercard.com.

Engine Cut-off Switch – Last year, California law required the use of an engine cut-off switch—also known as a kill switch or lanyard—on ves-sels under 26 feet. This safety device must be worn by the operator when at the helm and operating above 5 mph or dis-placement speeds. This law is designed to prevent runaway boat incidents in the event the operator is thrown from the helm, adding another layer of safety to California waterways.

Life Jackets Save Lives – All vessels, including stand-up paddleboards (SUPs), must carry a U.S. Coast Guard-approved life jacket for each person on board. Life jackets must be the correct size for the intended wearer and children under 13 must wear a life jacket at all times aboard a vessel, unless in a fully enclosed cabin. Everyone is strongly encouraged to wear a life jacket at all times on the water.

Boating Under the Influence (B.U.I.) – Operating a vessel under the influence of drugs or alcohol is illegal and dangerous. Boaters arrested for B.U.I. face similar consequences to D.U.I. drivers, including fines, license suspension, and possible jail.

Safe Navigation Practices – Always operate at safe speeds, especially in narrow channels or areas with limited visibility. Stay to the right side of the waterway. In crossing situations, the vessel to the right has the right of way.

Ski Flags and Observers – While engaged in towing activities, an observer who holds the ski flag, at the minimum age of 12 years old, must display the ski flag when required: a downed skier in the water, a skier in the water preparing to ski, a line is in the water extended from the vessel, and a ski or similar equipment is in the water in the vicinity of the vessel.

Blue Light Law – Boaters must slow to a no-wake speed when approaching/being approached by any law enforcement or emergency vessel displaying an illuminated blue light, whether the patrol vessel is moving or stationary.

Emergency Preparedness – Carry an emergency kit that includes a flashlight, warm clothing, a cell phone, VHF radio, and navigational charts. Before heading out, file a float plan. Learn how to create a float plan at: https://uscgboating.org/recreational-boaters/floating-plan.php

Carbon Monoxide Awareness – Be cautious of carbon monoxide buildup, especially when sitting on the swim platform or near the boat’s transom while the engine is running.

Youth Operation Rules – Children ages 12–15 may operate boats with motors over 15 horse-power or sailboats over 30 feet only if directly supervised by an adult (18+) who holds a California Boater Card.

Throwables Required – Boats 16 feet and longer must carry a U.S. Coast Guard-approved throwable flotation device, such as a life ring or square cushion, which must be easily accessible.

Additional Resources – The ABC’s of Boating safety handbook is available at most boating retailers. Visit dbw.ca.gov for more boating laws, safety tips, and California Boater Card information. For questions or non-emergency assistance, contact the Marine Services Unit at (925) 427-8507.

In emergencies, Dial 911 or call Contra Costa Sheriff’s Office Dispatch at (925) 646-2441.

Hayward man convicted of attempted murder in Oakley shooting, faces extradition for 2024 New Zealand murder

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Fourth arrest since 2018; also arrested by U.S. Marshalls, alleged to be hit man for organized crime 

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

Martinez, California – On May 18, 2026, a Contra Costa County jury convicted a Hayward man of attempted murder with premeditation, shooting at an occupied vehicle, reckless evasion, and being a felon in possession of a firearm — along with firearm enhancements for personally using a firearm.

The convicted man, 26-year-old Tanginoa Pahulu Tangi, (born 12/31/1999) attacked a victim in Oakley on August 27, 2025. Evidence at trial showed that Tangi drove from Alameda County to Oakley and waited approximately three hours outside the victim’s home. When the victim arrived, Tangi approached the vehicle and fired 17 shots at close range. The victim survived. Tangi then fled the scene and disposed of the firearm. Minutes later, a Contra Costa County Sheriff’s deputy attempted to pull Tangi over, but Tangi refused to yield, leading officers on an 11-mile high-speed chase before law enforcement apprehended him.

According to Oakley Police, after Tangi’s arrest, Oakley Detectives Dombrouski, Gill and Pistello worked tirelessly to determine the motive and the actions of Tangi leading up to the shooting. Through collaborative investigative efforts with other law enforcement agencies, Oakley detectives were able to backtrack Tangi’s movements from Oakley to Alameda County. Detectives also determined Tangi waited for the victim to show up at his girlfriend’s house on Trenton Street for more than three hours before the shooting occurred.

The Antioch Police Department assisted by setting up spike strips on Deer Valley near Prewett Ranch Drive. The suspect vehicle became disabled by the spikes and the driver was taken into custody. (See original Oakley PD press release)

The District Attorney’s Community Violence Reduction Unit prosecuted the case. District Attorney Diana Becton said, “This conviction reflects the outstanding work of our entire team, and we are grateful to everyone who helped bring justice for the victim in this case.”

Oakley Police Chief Paul Beard said “This was a very violent act that represented a significant threat to not only the victim, but also to all of the nearby neighbors on Trenton Street on that very early morning. Throughout this case, our Detectives and Special Service Team Officers worked very hard and we received assistance from the Contra Costa County Sheriff’s Office, Antioch Police Department, and the California Highway Patrol. It is very clear to me that Mr. Tangi is a dangerous person and I am grateful the Contra Costa County District Attorney’s Office tried the case in the way they did. This case is indicative that you never know who is coming into your neighborhood at night, so families should take precautions for themselves and their personal security. This event is also evidence that the presence of strong police forces that work together cohesively can make all the difference; I am proud to be part of the cohesive nature of the law enforcement agencies in East Contra Costa County. I hope the victim in this case continues to heal from his injuries.”

Tangi’s violent conduct extends beyond the United States. Authorities in New Zealand currently want him for the murder of a courier in Auckland.

His sentencing hearing for the Contra Costa County offenses is scheduled for June 29, 2026, at 8:30 a.m. in Department 4 of the Richard E. Arnason Justice Center in Pittsburg.

Case No. 04-25-01632 | The People of the State of California v. Tanginoa Pahulu Tangi

According to localcrimenews.com, Tangi is Asian Pacific Islander and has been previously arrested three other times in 2018 and 2020 for burglary, robbery and use of a deadly and/or dangerous weapon.

Arrested by U.S. Marshalls for New Zealand Murder as Hit Man

According to the Contra Costa Sheriff’s Office, he is six-foot, one-inches tall, 225 pounds, and is being held in the Martinez Detention Facility. Tangi was also arrested on Sept. 5, 2025, by U.S. Marshalls for the New Zealand case.

According to the Kaniva Tonga news source in New Zealand, Tonga Independent and Helm.news, Tangi is accused of being sent from California to New Zealand in 2024 to commit murder, leading to the death of an Auckland courier and he now, faces extradition. “Police say a United States national (Tangi) alleged to have acted as a contracted ‘hitman’ in the killing of Auckland courier driver Tuipulotu Kokohu Vi.”

“New Zealand Police alleged the 26‑year‑old flew into the country in August 2024, carried out the fatal shooting, and then fled back to the US before investigators were able to identify him. New Zealand police say he is also the subject of an extradition request relating to the Auckland killing.”

Tangi “is accused of traveling from California to New Zealand in 2024 at the direction of a U.S.-based organized crime group to carry out a murder. He is charged in New Zealand with the fatal shooting of 59-year-old Auckland courier Tuipulotu Vi, who was found dead in his van; police believe Vi was not the intended target. After the incident, Tangi returned to the U.S., where he was arrested in August 2025 following a separate shooting attempt. Extradition to New Zealand is pending, with three others now charged in connection with the case. The investigation remains active, and suppression orders have been lifted, allowing further details to be reported.”

Allen D. Payton contributed to this report.

Contra Costa Sheriff’s Office launches new Community Transparency Portal

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Photo: CCCSO

By Contra Costa County Office of the Sheriff

At the Contra Costa County Office of the Sheriff, we are dedicated to serving our diverse community with integrity, professionalism and accountability. Our mission – to work in partnership with the community to safeguard lives, rights and property through innovative and ethical law enforcement – guides everything we do.

We uphold core values of honor, courage, commitment, leadership and teamwork, and strive to conduct ourselves with the highest ethical standards in every interaction.

Our Commitment to the Community

To earn and maintain your trust, we aim to:

Provide accessible data about our policies, performance and community outcomes;

Engage openly with the public through accessible reports and dashboards;

Report on activities that affect community safety and wellbeing; and

Continuously evaluate and improve our practice based on community feedback and evidence-based standards.

We believe transparency is essential to public trust and to strengthening the partnership between the Sheriff’s Office and communities we proudly serve.

This portal is part of that commitment – your resource for understanding who we are, what we do and how we measure our performance.

The Community Transparency Portal:

-Provides accessible data about our policies, performance, and community outcomes.

-Engages openly with the public through accessible reports and dashboards.

-Reports on activities that affect community safety and wellbeing.

-Continuously evaluates and improves our practices based on community feedback and evidence-based standards.

The Community Transparency Portal is your resource for understanding who we are, what we do, and how we measure our performance.

https://transparencyportal.so.cccounty.us/