A 3-year-old girl and her great-grandfather are both dead after a one-vehicle crash in Shamokin Wednesday morning. Police say 68-year-old Allen Travitz, Sr. crashed his SUV head-on into a concrete wall along West Montgomery Street. Travitz and his 3-year-old great-granddaughter Mackenzie Mae Garber both died in the wreck. Shamokin police aren’t sure if he had a medical emergency or if the vehicle malfunctioned, but Travitz didn’t use his brakes. Police don’t believe Travitz was wearing a seatbelt. Also, there were two car seats in the vehicle, but police are not sure if the child was strapped into either one of them.