He was confronted by several suspects.
Police say with no apparent motive the suspects shot Dorsey several times, ran to a getaway car, and drove eastbound on 84th Street from Halldale Avenue.
Paramedics pronounced Dorsey dead at the scene.
There is no description of the suspects at this time.
Anyone with information is encouraged to contact Criminal Gang Homicide Division, 77th Homicide Squad Detectives at (213) 485-1383.