Organizations

Exeter Police Department

Law enforcement

The Exeter Police Department in Tulare County employed Joseph DeAngelo as a police officer from 1973 to 1976. During this period, the nearby city of Visalia was terrorized by a prolific burglar known as the Visalia Ransa…

Federal Bureau of Investigation (FBI)

Law enforcement

The FBI provided critical support to the Golden State Killer investigation, particularly in the final phase that led to DeAngelo's identification. The FBI lab analyzed DNA evidence and the bureau's resources supported th…

GEDmatch

Technology

GEDmatch is a free, publicly accessible genetic genealogy database where users voluntarily upload their DNA profiles to find relatives. Investigators uploaded the Golden State Killer's crime scene DNA to GEDmatch, findin…

Parabon NanoLabs

Technology

Reston, Virginia DNA technology firm offering Snapshot phenotyping and genetic genealogy to police. It was not involved in the 2018 Golden State Killer identification and launched its genealogy unit afterward.

Sacramento County Sheriff's Department

Law enforcement

The Sacramento County Sheriff's Department was the primary law enforcement agency investigating the East Area Rapist attacks in Sacramento County from 1976 to 1979. The department handled dozens of rape cases attributed …