CHICAGO (WLS) -- Four airport employees were injured in a vehicular crash on a service road at O'Hare overnight.
Four adults were involved in the collision around 1 a.m. Monday. Two people were taken to Advocate Lutheran Hospital, one person was taken to Loyola University Medical Center and one person was taken to Resurrection Medical Center.
The Chicago Department of Aviation said the victims were badged airport employees, but they do not work for the city. Flight operations were not impacted by the crash.
Police have not released a cause.
The Sun-Times Media Wire contributed to this report.