Robert Bates was 31 when his body was found on February 25, 1987, in a secluded area near Chester Creek in Chester, Pennsylvania. Local investigators determined his death was a homicide caused by blunt force trauma.

Detectives examined Bates’s background and final days and followed leads that included a possible dispute with a known associate, but none of those leads produced a public identification of a suspect or an arrest. The investigation eventually went cold and remains unsolved.

Anyone who knew Robert, his movements in February 1987, or who has information about people he associated with around that time is asked to come forward.