Cold Case-Unsolved Homicide Unit

District Attorney Diana Becton established a Cold Case-Unsolved Homicide Unit in order to devote more resources toward solving and prosecuting currently unsolved homicides in Contra Costa County.

The Cold Case-Unsolved Homicide Unit is committed to providing long-awaited answers and justice to homicide victims' families and our community.

For any tips on cases please email Chief of Inspectors Arnold Threets or Lt. Dominic Medina for assistance.

The District Attorney's Office's Cold Case-Unsolved Homicide Unit works with Contra Costa County law enforcement agencies, federal law enforcement partners, and the Contra Costa County Sheriff's Crime Laboratory to evaluate evidence collected in these unsolved murder cases. The evaluation of crime scene investigations utilizes developing forensic technology, scientific advances in DNA, investigative genealogy, and expedited laboratory testing.