"Philadelphia community mourns after fatal shooting of 15-year-old on SEPTA bus"

A 15-year-old boy, Randy Mills, was shot and killed on a SEPTA bus in Philadelphia. The shooter, who was wearing a mask and dark hooded sweatshirt, fled the scene before police arrived. The victim's mother remembers her son as a "special boy" who was loved by many. Police are searching for the shooter and a person of interest who was captured on bus surveillance footage rifling through Mills' dying body. The victim's mother urges the shooter to turn themselves in.