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.
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