Baldwin police Chief Michael Scott said Rocco Bombara, 51, pulled a handgun from under his wheelchair cushion and fatally shot the rifle-toting intruder, but only after the man fired two shots into Bombara's apartment at about 2 a.m. Sunday while trying to climb in through a window.
Scott said Lairy James-Watson, 19, of McKees Rocks, died of a single gunshot wound to the chest.
"He [Watson] had pushed the window open and apparently pushed through and probably leaned into the window and fired one or two shots," said Scott. "The suspect had been hit once in the chest area."
Nicco Bombara, 18, said he was on the computer while his father was watching TV with a friend at their Youngridge Drive apartment.
Bombara said he was shot in the hand by James-Watson before his father fatally shot the intruder.
Nicco Bombara said his father lost his legs due to health problems and uses a wheelchair.
Allegheny County homicide detectives said they've investigated and also said charges are unlikely, though they said District Attorney Stephen Zappala Jr. will make the final call.
A Zappala spokesman said the case remains under review.
Neighbors said the area has seen increasing crime.
"I don't feel safe with my kids being out alone. I have a 5-year-old and a 7-year- old," said Megan James. "When I have my children out here they're always with me, they're never by themselves"