Patricia Ochoa, a 19-year-old resident of Concord, California, was killed in a drive-by shooting on June 23, 2015, on Highway 4 in Bay Point near Pittsburg. The shooting happened around 10 p.m. while Patricia and a 26-year-old man from Bay Point were driving; both were transported to John Muir Medical Center in Concord, and Patricia died of her injuries while the other victim was reported in stable condition.

The Contra Costa County Sheriff’s Office treated the incident as gang-related and linked it to a string of violent events in the area, including another fatal Highway 4 shooting just days earlier. Authorities did not release specifics about which gangs, or whether the victims had any gang affiliations. No arrests had been announced and the investigation remained active.

Does anyone who was in the Bay Point or Highway 4 area that night have information that could help investigators?