The head of the District’s juvenile detention center has resigned, sources told The Washington Examiner, making Sean Hamilton the third top official to flee the city’s troubled juvenile justice agency since Mayor Adrian Fenty fired interim Director Marc Schindler in July.

The rapid changes at the top of the Department of Youth Rehabilitative Services have come as new interim Director Robert Hildum has pushed to keep more young criminal offenders behind bars. The day Fenty announced Hildum’s appointment in July, the agency’s second in command, Deputy Director David Brown, and confinement chief David Muhammad announced their resignations. Hamilton is now following their lead, a year after he took the job as New Beginnings’ superintendent.