Adam Vaughan was murdered in Detroit, but the facts of his killing remain largely unknown. Investigators say progress has been hampered by a pervasive reluctance among potential witnesses to come forward, leaving detectives with very little testimony to reconstruct events or identify a suspect.

Because of that wall of silence, there have been no publicly announced suspects or arrests and key details about where and how he was killed have not been released. The lack of cooperation has left Vaughan’s family without answers and the investigation stalled.

If anyone witnessed anything related to Adam Vaughan’s death or has information that could help the case, please contact the Detroit police.