A lawsuit has been filed over this week's collision that injured dozens of passengers aboard a Chicago Transit Authority train.
The Chicago Sun-Times reports the lawsuit was filed by Kim Quatch, who's seeking at least $50,000 in damages.
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She was a passenger who was hurt on a Blue Line train that was rammed by an empty, unmanned train Monday in the Chicago suburb of Forest Park.
Video footage shows that no one was driving the four-car train when it rumbled the wrong way and crashed into a parked train about 10 miles west of Chicago.
As many as four dozen people were treated for minor injuries.
An investigation into what caused the crash is continuing.
The CTA declined to comment on the litigation.