Contra Costa Herald

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

Caltrans worker killed on Highway 4 in Contra Costa County

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39-year-old Mahdi Khorram mourned

By Edward Barrera, Division Chief, Public Affairs, Caltrans Headquarters

Madhi Khorram of Caltrans District 4. Photo: California Department of Transportation

Sacramento – Caltrans is mourning the death of Mahdi Khorram, a department employee who was killed while working on Highway 4 in Contra Costa County.

At approximately 1:30 a.m. on Sept. 18, 2025, Mahdi, 39, died after being struck by an asphalt truck in a construction zone.

“Mahdi was more than a colleague — he was a valued member of our Caltrans family. His tragic death is a devastating loss to his family, friends and for all his colleagues. I extend my heartfelt prayers and deepest sympathy to his loved ones and all who knew and worked with him”

Dina El-Tawansy, Caltrans Director

Based in Concord, Mahdi began at Caltrans in 2023 and was a transportation engineer – construction inspector. He is survived by his wife and three-year-old child.

In Mahdi’s honor, flags were lowered to half-staff at the State Capitol, Capitol Annex Swing Space and all Caltrans buildings.

To honor Mahdi’s memory and support his family, the California Transportation Foundation has established a memorial fund. If you wish to contribute, please visit the Mahdi Khorram Memorial Fund.

Since 1921, 195 Caltrans workers have lost their lives on the job.

7 arrested in Concord mall smash and grab burglary, one with assault weapon

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A glass entry door to the Sun Valley Mall in Concord was broken through in the attempted smash and grab burglary and gun seized from one of the suspects on Sunday morning, Oct. 5, 2025. Photos: Concord PD

4 following early Sunday morning police pursuit, collision

18-year-old from Richmond, 6 juveniles

By Concord Police Department

On Sunday, Oct. 5, 2025, at 3:52am, Concord PD Dispatchers received a call from Sun Valley Shopping Center Security regarding a burglary in progress. A large group of suspects had forced entry through glass doors. Officers quickly arrived at the mall and located the suspects exiting.

Four suspects entered a vehicle and fled, leading officers on a short pursuit. The driver lost control, was involved in a solo vehicle collision and then fled on foot. The three he left behind in the car were immediately taken into custody. There were no injuries as a result of the vehicle collision.

The driver was located a short distance away, hiding in bushes and taken into custody. The other three subjects that had been left behind at the mall were also immediately taken into custody. One of them was found to be in possession of a firearm with modifications that made it an assault weapon.

There are no outstanding suspects, and all are facing an extensive list of charges. The six male juveniles, all from San Pablo and Richmond, were booked at the Contra Costa County Juvenile Hall. Marcos Ramirez-Castro, 18, from Richmond, was booked at the Martinez Detention Facility.

Oakland woman charged as accessory after the fact in Walnut Creek double murder

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In romantic relationship with alleged killer; also charged with first-degree residential burglary, destroying evidence

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

Martinez, California – The Contra Costa District Attorney’s Office has filed two felony charges and one misdemeanor charge against an Oakland woman in connection with the September 18th murders of two women in Walnut Creek.

45-year-old Yan Wang (born 7/22/1980) will be arraigned at 1:30 pm on September 30th in Contra Costa Superior Court in Martinez. She faces two felony and one misdemeanor charges related to the murders of Linlin Guo and Beimin Cheng.

The primary suspect, Howard Wang, was charged with the unlawful killing of both women on September 22nd. Howard Wang was married to Linlin Guo but was in a romantic relationship with Yan Wang at the time of the murders. Howard Wang is scheduled for arraignment on October 3rd in Martinez and faces life in prison without the possibility of parole if convicted.

Yan Wang, who has no familial relation to Howard Wang, faces the following charges:

  • PC 32 (Felony) – Accessory After the Fact: Yan Wang allegedly aided Howard Wang with knowledge following the murders and with intent to help him avoid arrest, trial, conviction, and punishment for killing his wife, Linlin Guo, and her mother, Beimin Cheng.
  • PC 459 (Felony) – First Degree Residential Burglary: On or about September 19th, Yan Wang allegedly entered the residence owned by Howard Wang and Linlin Guo with intent to commit larceny.
  • PC 135 (Misdemeanor) – Destroying Evidence: On September 18th, Yan Wang allegedly destroyed cellphones to prevent evidence from being produced.

“This case serves as a sobering reminder of domestic violence’s far-reaching consequences,” said Contra Costa District Attorney Diana Becton. “Our office will pursue justice with the seriousness and urgency this tragedy demands.”

According to the Contra Costa County Sheriff’s Office, the five-feet, seven-inch tall, 105-pound Yan Wang is being held in the West County Detention Facility on no bail.

Case No. 01-25-03240 | The People of the State of California v. Yan Wang

Allen D. Payton contributed to this report.

Concord issues Request for Proposals for rehabilitation, adaptive reuse of Don Fernando Pacheco Adobe

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Don Fernando Pacheco Adobe. Photo: City of Concord

Rare opportunity to restore historic building, develop 3.7 acres

Due November 7

By Colleen Awad, Community Relations Manager, City of Concord

Concord, CA –The City of Concord has released a Request for Proposals (RFP) seeking qualified partners to rehabilitate, adaptively reuse and manage the historic Don Fernando Pacheco Adobe and its surrounding property. This unique opportunity invites visionary teams to restore one of Concord’s most significant landmarks while activating several acres of land for new community-oriented development.

“The Adobe is one of Concord’s most treasured historic resources,” said Justin Ezell, Assistant City Manager. “Our vision is to find a partner who can breathe new life into the building, respect its history, and create a destination where the public can once again gather and experience this piece of our community’s story.”

Photo: City of Concord

Constructed in 1844, the Don Fernando Pacheco Adobe, located at 3119 Grant Street, is among the oldest surviving structures in Concord and is listed on the National Register of Historic Places. Built by Don Fernando Pacheco, son of the grantee of Rancho Monte del Diablo, the adobe is a rare physical link to California’s Rancho Period and an enduring symbol of the region’s cultural heritage. The City has prioritized preserving this landmark and ensuring it remains publicly accessible for future generations.

In addition to the 1.4-acre site containing the Adobe, the City is offering an adjacent 3.7 acres for new development. Together, the property represents a rare opportunity for a creative partner to combine historic preservation with new facilities that can deliver cultural, recreational, or community benefits. Potential land uses include performance space, meeting facilities, early childhood education, recreation, or other compatible uses.

A non-mandatory walkthrough and pre-submittal meeting will be held at the Adobe on Friday, September 26, 2025, at 9:00 a.m. Interested parties are encouraged to attend to learn more about the site and the City’s goals for the project.

Proposals are due by Friday, November 7, 2025, at 3:00 p.m. to:

Justin Ezell, Assistant City Manager

City of Concord

1950 Parkside Drive

Concord, CA 94519

For more information and to download the full RFP, visit www.cityofconcord.org/adobe.

Walnut Creek man charged in double murder of his wife, mother-in-law

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Faces additional charges of making criminal threats of death and great bodily injury in 2024, preventing wife from calling police in 2023

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

Martinez, California – A 43-year-old Walnut Creek resident was charged by the Contra Costa District Attorney’s Office in a double murder.

Howard Wang was scheduled to be arraigned at 1:30 pm on September 23rd in Contra Costa Superior Court in Martinez for the murder of his wife Linlin Guo, and mother-in-law, Beimin Cheng. The murders occurred on September 18th, 2025, at the couple’s residence in Walnut Creek. The charges include special circumstances enhancements for multiple murders. If found guilty by a jury, Wang could be sentenced to life in prison without the possibility of parole.

Additional charges against Wang include making criminal threats of death and great bodily injury against Linlin Guo around August 31st, 2024, and preventing Linlin Guo from reporting a crime to law enforcement on January 7th, 2023.  As previously reported, the five-foot, 10-inch tall, 183-pound Wang was also arrested on Jan. 7, 2023, by Walnut Creek Police for battery on a spouse, cohabitant or former spouse, removing, destroying or damaging a wireless communication device to prevent summoning assistance or law enforcement.

Contra Costa District Attorney Diana Becton said, “This tragic case is a stark reminder of the devastating toll domestic violence takes — not only on the victims whose lives were lost, but on families and the community as a whole. Our office is committed to aggressively pursuing justice in this case.”

Case No. 01-25-03009 | The People of the State of California v. Howard Wang

See Howard Wang Charging Document

Allen D. Payton contributed to this report.

43-year-old man arrested for Walnut Creek double murder

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Two adult women victims discovered inside residence knew 43-year-old Howard Wang

By Sgt. Mike Watson, Walnut Creek Police

On Thursday, September 18, 2025, at approximately 11:45PM, Walnut Creek Police officers responded to a 911 call reporting a disturbance with possible gunfire in the 100 block of Kelobra Court. Upon arrival, officers discovered two adult women deceased inside the residence.

Following the initial investigation, on Sept. 19th, an adult male – Howard Chen Hao Wang, 43-year-old resident of Walnut Creek (born 4/21/1982), who was known to both victims – was taken into custody. He was charged with two counts of 187 P.C. Murder, is currently booked at the Martinez Detention Facility and is being held without bail.

At this time, investigators do not believe there are any outstanding suspects and there is no indication of an ongoing threat to public safety. This investigation remains active, and no additional details are available for release.

The Walnut Creek Police Department would like to thank the Concord Police Department and the Contra Costa County Office of the Sheriff for their assistance in this investigation.

Anyone with information about this incident is encouraged to contact the Walnut Creek Police Department at (925) 943-5844 or provide information anonymously through the tip line at (925) 943-5865. Case # 25-29002

According to the Contra Costa County Sheriff’s Department, the five-foot, 10-inch tall, 183-pound Wang has his next court appearance in Superior Court, Dept. 5 in Martinez at on Tuesday, Sept. 23 at 1:30 p.m.

According to localcrimenews.com, he was also arrested on Jan. 7, 2023 by Walnut Creek Police for battery on a spouse, cohabitant or former spouse, removing, destroying or  damaging a wireless communication device to prevent summoning assistance or law enforcement. He was previously arrested in November 2014 by Coalinga CHP for driving with a suspended license, a restricted view and speed over 70 MPH.

Allen D. Payton contributed to this report.

Bay Point, Concord men arrested, charged with attempted murder for shooting of 3 in Concord parking garage

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31-year-old Justino Lopez-Perez held on $2.3 million bail, 23-year-old Erickson Melendez arrested last year for violent crimes held on $750K bail; third suspect also arrested

By Concord Police Department

As previously reported, on Tuesday, Sept. 16, 2025, shortly after 10:20 PM, three gunshot wound victims arrived at John Muir Medical Center in Concord and reported they were shot while in a parking garage in the 2000 block of Salvio Street in downtown Concord. Patrol officers responded and descriptions of the suspects and their vehicle were developed. These descriptions were shared with area law enforcement agencies. Just over an hour later, deputies from the Contra Costa County, Office of the Sheriff located the suspect vehicle. From that stop, two occupants were detained and arrested. Detectives from the Investigations Division were called to take over the investigation and continue following up on leads throughout the night and the next day.

On Wednesday, at about 6:30 PM, a third suspect was arrested in relation to the shooting. During the arrest and subsequent search, evidence related to the shooting was found. On Thursday, the Contra Costa County, District Attorney’s Office filed charges related to the shooting.

The following two men were charged with the shooting: Justino Lopez-Perez (31 years old, resident of Bay Point, born 11/16/1993) was charged with 664/187 PC- Attempted murder, 182(a)(1) PC- Conspiracy, 26100(c) PC- Discharge a firearm from a vehicle, 245(b) PC-Assault with a firearm, and use of a firearm enhancements. Erickson Adoni Melendez (23 years old, resident of Concord, born 6/2/2002) was charged with 182(a)(1) PC – Conspiracy and 26100(c) PC- Discharge a firearm from a vehicle.

According to the Contra Costa County Sheriff’s Department, the five-feet, eight-inch tall, 143-pound Lopez-Perez is being held in the Martinez Detention Facility on $2.3 million bail and his next court appearance is scheduled for Tuesday, Sept. 23 at 1:35 p.m. in Dept. 5, Superior Court in Martinez.

According to localcrimenews.com, Melendez was also arrested on Sept. 15, 2024, by Contra Costa Sheriff’s Deputies for kidnapping, battery on a spouse, cohabitant or former spouse and assault with a deadly weapon or assault with force likely to produce great bodily injury. According to the Contra Costa County Sheriff’s Department, the five-feet, 10-inch tall, 175-pound suspect is also being held in the Martinez Detention Facility on $750,000 bail. He has the same court appearance date, time and location as Lopez-Perez.

We would like to thank the deputies from the Contra Costa County Office of the Sheriff, staff at John Muir Hospital, and community members who supported and assisted in this investigation. The three men who were shot were treated at area hospitals and are expected to survive. If you have any information about this incident, please contact Detective Enrique Espino at (925) 671-3426.

Allen D. Payton contributed to this report.

Police seek public’s help to ID Walnut Creek mail theft suspect

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Photos: Walnut Creek PD

By Walnut Creek Police Department

Can you help us identify this mail theft suspect?

The Walnut Creek Police Department is asking for the public’s help in identifying the individual shown in these photos. He is suspected of stealing mail from multiple mailboxes in the area (Case #25-26672).

If you recognize him or have any information, please contact Officer Romero at bromero@walnutcreekpd.com

Prefer to stay anonymous? You can leave a tip by calling our tip line at 925-943-5865.

Thank you for helping keep our community safe!

Police investigate shooting of three males in Concord city garage

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By Concord Police Department

Last night, Tuesday, September 16, 2025, around 10:20 pm, Concord Police Department officers were dispatched to John Muir Concord Medical Center when three males arrived with gunshot wounds after being driven there by friends. CPD determined that a shooting had just occurred in the municipal parking garage on Salvio Street.

A suspect vehicle was quickly identified and the information shared with other law enforcement partners. Deputies from the Contra Costa Sheriff’s Office located the suspect vehicle driving in Bay Point where they conducted a traffic stop and detained the occupants.

The three shooting victims are all in stable condition and expected to survive. Concord Police Department detectives are still investigating the incident and trying to determine motives behind the shooting and if there are any other persons involved. Anyone with more information is encouraged to contact Concord Police Department Major Crimes Unit Detective Espino at (925) 671-3426.

Solo vehicle fatality in Pleasant Hill

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By CHP – Contra Costa

PLEASANT HILL, CA – On Tuesday, August 12th, 2025, at approximately 8:14 a.m., officers assigned to the California Highway Patrol’s (CHP) Contra Costa Area office responded to a solo vehicle crash which occurred on the off-ramp of Interstate 680 (I-680) northbound to Monument Blvd., in the city of Pleasant Hill.

Our preliminary investigation indicates a silver Lexus SUV, occupied by one male adult driver, was traveling on I-680 northbound, just south of Monument Blvd. in the slow lane. For reasons still under investigation, the Lexus suddenly turned to its right, crossed over the reverse gore point, and drove on to the Monument Boulevard off-ramp. The driver subsequently lost control of the Lexus, traveled up the left embankment, and ultimately overturned.

Tragically, the driver was ejected during the crash, sustained fatal injuries, and was pronounced deceased at the scene. During the investigation it was determined driver was not wearing his seatbelt during the crash.

The I-680 northbound to Monument Blvd. off-ramp was closed at approximately 8:22 a.m., for on-scene investigation, and was re-opened at approximately 10:35 a.m.

This crash remains under investigation. If anyone witnessed the incident or the events leading up to it, please contact Contra Costa Area office in Martinez at (925) 646-4980 or email your contact information to 320Investigations@chp.ca.gov to be contacted by the investigating officer.

The Mission of the California Highway Patrol is to provide the highest level of Safety, Service, and Security.