Former dean of Northeast High School faces sex charges

March 13, 2013 4:18:57 AM PDT
Philadelphia's district attorney has announced sexual assault charges against a former high school dean.

56 year-old Mark Williams was at one time the dean of students at Northeast High School.

According to the Philadelphia District Attorney's Office, Williams turned himself into police Tuesday.

He is accused of sexually assaulting a 17-year-old student at the school.

Williams was still awaiting arraignment Tuesday night.