That victim, Joseph Fleming, died from his wounds on Friday, police said.
That same day one of the suspects in the crime, Aaron Pitts, turned himself in to homicide detectives.
Police are still looking for another suspect, 18-year-old Sean Johnson of the 2100 block of South 67th Street. He had been in custody, but somehow escaped.
The shooting happened on May 17th. Police said Fleming heard a noise in his basement, went to investigate and was shot in the stomach and leg.
Anyone with information on Johnson's whereabouts is asked to contact police at 215-686-TIPS (6477) or through phillypolice.com.