Police: Killing of 15-year-old boy in Kingsessing appears to be a random act of violence WPVI Replay Video UP NEXT Philadelphia police say the killing of a 15-year-old boy on Tuesday night in the city's Kingsessing section appears to be a random act of violence. Antonio Walker Jr. was shot shortly before 7 p.m. on the 5200 block of Pentridge Street. In a news conference on Wednesday afternoon, Capt. Jason Smith said Walker was playing basketball with his 14-year-old cousin when they heard gunshots. As the teens tried to take cover, Smith said they saw a car coming at them with an arm extended out the rear driver's side window.