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CHICAGO —  The Chicago police Major Accident Unit is investigating a crash on the Southwest Side that killed one person and critically injured another.

The accident happened at about 5:20 a.m. Sunday in the 3100 block of South Damen where the road passes over the Stevenson Expressway.

A 23-year-old woman died. She was a passenger in a car that was heading north on Damen when it hit the passenger side of a semi trailer that was making a left turn. The driver of the car is in critical condition at Stroger Hospital.

There were no other injuries.