A person was killed in a crash on the Bishop Ford Expressway on Sunday morning.
About 5 a.m., troopers responded to a call of a crash involving a pedestrian and a vehicle on I-94 near 111th Street, Illinois State Police said.
The pedestrian was pronounced dead, state police said.
A second crash happened while a trooper was attempting to control traffic, state police said. A vehicle crashed into the back of the squad car, but the trooper was not injured.
All lanes reopened about 10:20 a.m. after they were shut down for the investigation.