Tyree DaVon Thornton was 21 when he was found dead in Detroit on July 22, 2013. Officers discovered him in the 17100 block of East Warren Avenue, a commercial corridor on the city’s east side, and the death was immediately classified as a homicide.

Investigators opened a homicide inquiry and attempted to reconstruct Tyree’s final hours, but the probe did not produce an identified suspect. Over the years the case has remained unsolved; no arrests have been announced and the Detroit Police Department continues to list the matter among its cold cases.

If anyone has information about Tyree’s movements that day, or saw something on East Warren Avenue around July 22, 2013, please contact Detroit police.