Mom devastated after 15-yo son, an innocent bystander, shot and killed PHILADELPHIA (KYW) — We’re hearing from the mother of a 15-year-old boy who was shot and killed in what appears to be a random act of violence. Antonio Walker Jr. was gunned down on the 5200 block of Pentridge Street last night in Southwest Philadelphia. “I am devastated. My life will never be the same,” Nydisha Williams said. Williams decided to speak with CBS3 late Wednesday afternoon, hopeful her son’s legacy would be more about the peaceful young man he was, his love of painter Bob Ross and his intense respect for Elon Musk.