Isaac Duran, 19, was shot and killed on the evening of December 3, 2015, near 5390 Southall Lane in Bell, California. Officers responding to reports of gunfire found Duran on a bike path with multiple gunshot wounds; paramedics pronounced him dead at the scene at 9:34 p.m.

The Los Angeles County Sheriff’s Department led the investigation. Detectives said they were seeking witnesses; one person reported seeing men running north on the bike path after the shooting. No motive had been determined and no arrests were announced at the time. Authorities asked the public to come forward and offered anonymity through Crime Stoppers.

The investigation struggled with limited concrete leads and a shortage of witness testimony, and detectives continued to pursue all possible avenues. If anyone saw activity on the bike path that night or has information about the men seen running, contact the Sheriff’s Homicide Bureau.