CHICAGO (AP) - Federal authorities have issued a report on the Chicago train crash earlier this week, but they are still trying to figure out how the accident happened.
The National Transportation Safety Board said in a Friday report that an unoccupied car's mechanical stop mechanisms were left in a setting that let the Blue Line train's brakes reset. That allowed the train to roll until it crashed into another train. The second train was in operation and a few dozen people aboard it Monday reported minor injuries.
Chicago Transit Authority spokesman Brian Steele says there's been no indication of sabotage or vandalism.
Friday's three-page report from the NTSB made urgent safety recommendations. Steele says the CTA already took those additional safety steps earlier in the week.
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