CHICAGO (CBS)-- At least seven people were injured overnight in a chain-reaction crash on the Dan Ryan Expressway.
Illinois State Police said a fuel spill is believed to have caused the pile-up between 31st Street and Cermak Road around 1 a.m.
The Chicago Fire Department said seven people were taken to local hospitals, and ten were checked at the scene.
The multi-car crash caused significant backups for early morning commuters until the lanes were reopened.
A truck driver told CBS 2 he skidded, but could not avoid crashing.
"I try stop my truck but I can't," He said. "I hit wall between the two way."
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