Montgomery Township Police are investigating a Saturday night incident in a Montgomery Mall parking lot that left a teenager seriously injured. Police say an older-model sport-utility vehicle, possibly a Toyota 4-Runner, stopped near a group of teens outside Dick’s Sporting Goods.  Two people got out and exchanged words, one struck a 15-year-old boy in the face with a baseball bat, and they both got back in and drove away.  Anyone with information on the incident should call Montgomery Township Police.