Ralph Green, 63, was found deceased under suspicious circumstances in San Diego, California, on October 20, 2013.

The San Diego Police Department’s Homicide Unit continues to handle this case alongside many other unsolved homicides in the area. Investigators cite limited physical evidence and a scarcity of witnesses willing to come forward because of fear of retribution; advanced forensic methods have been applied but no new leads have produced a resolution.

Anyone who knew Ralph, was in the neighborhood on October 20, 2013, or has information that could help investigators is asked to come forward with tips.