At approximately 9:28 p.m. on Friday police responded to a 911 call about a person with a gun at 4004 Market Street, according to police.
When police arrived they found a black man suffering from gunshot wounds to the face and neck.
The 21-year-old man was transported to the hospital where he was pronounced dead at 9:50 p.m., according to the police.
Police have not made any arrests and no weapons were recovered at the scene. The motive is unknown at this time.
Get top local stories in Philly delivered to you every morning. Sign up for NBC Philadelphia's News Headlines newsletter.
Police believe the suspect to be a black man who was wearing a mask, gloves and all-black clothing.
This is a breaking news story. Check back for updates.
Sign up for our Breaking newsletter to get the most urgent news stories in your inbox.