Police announced earlier today that a 53-year-old homeless man has been charged with trying to rape a Truebright Science Academy student in North Philadelphia.

On March 16, detectives said, Keith Williams followed the 15-year-old girl to the school, on Broad Street near McFerran, then pinned her against a wall and attempted to expose himself. A school dean chased him away.

Williams was arrested at a Southwest Philadelphia homeless shelter on May 19. He was charged with attempted rape, stalking, corrupting the morals of a minor and related offenses.