On April 11, 1991, a shooting on the 1100 block of South Raritan Street in Denver left 18-year-old Sammy John Sanchez dead and three other people wounded. Officers who responded that Thursday found four victims with gunshot injuries; Sanchez did not survive. The case was classified as a homicide and an investigation opened.

Decades later, no arrests have been announced and no suspects have been publicly identified. The investigation remains open and the identity of whoever fired the shots has not been determined. If anyone has information about the April 11, 1991 shooting on South Raritan Street or knew Sammy John Sanchez, please come forward with what you know.