Railroad experts told the paper that early findings "have led them to consider emergency recommendations to the CTA." The 12 rail cars, the four-car train and the eight-car train, were taken to a CTA facility for examination Tuesday night, according to the Tribune.
The National Transportation Safety Board ( NTSB) took over the accident scene Monday. Officials will continue its investigation despite the government shutdown, the Associated Press reported earlier this week.
The NTSB offices have closed, and a recording at NTSB on Thursday said, "due to a lapse in funding," the spokesman assigned to the investigation is out of the office.
The accident occurred about 7:43 a.m. Monday, when a four-car, out-of-service train left a rail yard in Forest Park and hit a stationary train occupied by about 40 people near Harlem Avenue. Officials said 33 people were injured. No injuries were life-threatening.
Read the full Chicago Tribune story here.