(WPXI) – Mark Hall, who was missing in Pittsburgh, was found dead on Tuesday, according to the Allegheny County Medical Examiner’s Office. The ME’s office said Hall, 47, was found unresponsive inside of a vehicle inside the Hot Metal Parking Garage on Sidney Street in the South Side around one-thirty. He was last seen Jan. 23rd in the West End, according to a post on the Pittsburgh Police Facebook page. Hall was the officer in charge for the Houston Borough Police Department. The Medical Examiner will perform an autopsy to determine the cause and manner of his death.