A Montgomery County man is accused of dragging a Philadelphia Police Officer behind his pickup truck during a traffic stop.  

27-year-old Christopher Stegall of West Norriton is charged with aggravated assault and other offenses.  

He turned himself in Thursday evening.  Police say he stopped briefly Tuesday night, but then sped off, dragging the officer for nearly a block.  The officer, who was not identified, suffered a broken ankle.