EMBED >More News Videos SEPTA: Bus passenger stabbed in face with screwdriver. Tamala Edwards reports during Action News Mornings on January 10, 2018.

GERMANTOWN (WPVI) -- Police are investigating a stabbing that took place on a SEPTA bus in the Germantown section of Philadelphia.It happened in the area of Germantown Avenue and W. Logan Street shortly after 8 a.m. Wednesday.SEPTA officials say there was an altercation between two passengers on a Route 23 bus.They say one passenger stabbed the other in the face with a screwdriver and then fled on foot.The 19-year-old victim received a cut to his lip. He told authorities that he did not know the assailant.Police have released surveillance images of the suspect as the search for him continues.------