Richard Castillo Munoz, 57, was found dead in a residential area of San Bernardino, California, on January 30, 2015.

The San Bernardino Police Department and the Coroner’s Office have been involved in the investigation, and the San Bernardino County Sheriff’s Department describes the case as one of several cold homicides investigators continue to pursue. Despite multiple public appeals, the case remains unsolved and investigators say community tips are crucial.

If anyone has information about Munoz, his movements before January 30, 2015, or anything suspicious in that neighborhood around that date, please contact the authorities.