Potentially complicating the investigation, Kelly tells CBS 2, is word that cameras stationed where the train began its mysterious journey were not functioning Monday morning.
Oh! and check the 8th paragraph in THIS article!
Kelly said the train was parked perhaps a quarter mile beyond the Forest Park station, in a spot where it could not be seen by any commuters or anyone else, including CTA workers, inside the station. He said that it wasn’t until a CTA worker spotted the empty train roll through the station that there was any indication that anything was wrong.