The Brief A 15-year-old boy who was reported missing from Northeast Philadelphia was struck and killed by a CSX train late Monday night. Police say the teenager was walking along railroad tracks near Grant Avenue when he was hit. Police say a missing 15-year-old boy was struck and killed by a freight train while walking on the track late Monday night in Philadelphia. What we know:Investigators say the fatal accident happened just before midnight on the southbound tracks near Grant Avenue in Northeast Philadelphia. "Of course, it is a really really sad story.