Four people were injured in a crash involving an IDOT vehicle early Sunday in the Greater Grand Crossing neighborhood on the South Side.
Paramedics responded to the crash in the 7600 block of South Lafayette, Fire Media Affairs said shortly after 3 a.m.
Four people were taken to the hospital, fire officials said.
A police source said the crash involved an Illinois Department of Transportation vehicle. Additional details were not immediately available.
Illinois State Police are investigating.