The head of the District’s troubled juvenile justice agency has resigned, becoming the third chief of the agency to leave the office this year.

Robert Hildum will be leaving his position as interim director of the Department of Youth Rehabilitation Services at the end of the week, D.C. Attorney General Peter Nickles confirmed to The Washington Examiner. He will be returning to his old job in Nickles’ office as the head of the attorney general’s public safety unit.