Frankie Larry Valdez, 29, was shot and killed on November 7, 2014, in Compton, California. Los Angeles County coroner records list a gunshot wound as the cause of death; reports say he was shot multiple times and died at the scene.

The Los Angeles County Sheriff’s Department opened an investigation but has faced obstacles: investigators reportedly struggled to find witnesses or concrete evidence, and community reluctance to come forward complicated the probe.

Anyone with information about what happened on November 7, 2014, in Compton is asked to come forward.