Police were called to the intersection of 39th Street and Haverford Avenue at 9:12 a.m. for a report of a shooting.
There, they found a 36-year-old man with a gunshot wound to the back of the head. He was pronounced dead at 9:51 a.m.
Investigators say a black male with a green hat and a dark hooded sweatshirt was spotted running from the scene.
There was no immediate word on the identity of the victim or a motive in this shooting.