FAIRMOUNT PARK (WPVI) --Police are looking for a man posing as a cop, who they say robbed and assaulted a victim in Philadelphia's Fairmount Park section.
Officers responded around 8:40 p.m. Sunday to the area of Concourse Drive and Belmont Avenue.
A victim told police a man impersonating an officer approached and pulled a semi-automatic weapon from his belt.
The suspect robbed, and then assaulted the victim with the gun, hitting him in the back of the head.
The suspect then took off in a black Ford Explorer with flashing lights, but no sirens.
The victim was taken to Penn Presbyterian Medical Center. No word on his condition.
The suspect is described as a male with a dark complexion, facial hair, wearing all black. He remains at large.
The suspect got away with $100.
Police are investigating.