Police say an alleged gunman in his teens has surrendered in connection with the murder of 51-year-old James Stuhlman, who was shot and killed while walking his dog in Philadelphia's Overbrook section last week.
According to WPVI-TV, 15-year-old Tyfine Hamilton turned himself in early Friday morning. Another 15-year-old, Brandon Smith and a third boy who remains unnamed are also in police custody.
Hamilton and Smith are charged with murder, robbery and related charges.
WPVI reports, the third boy, who is 14-years-old, is facing lesser charges and will be tried as a juvenile.
Stuhlman was out walking his dog last week, when police say he was approached by three juveniles attempting a robbery.
Police claim Stuhlman pleaded for his life, saying, "Please don't shoot me. Please don't shoot me." But he was still shot in the chest.
Authorities say the suspects ran off without taking any of Stuhlman's belongings.
"Which makes this even more senseless, and even more troubling," said Philadelphia Police Captain James Clark, "that nothing was taken at all and he lost his life."