A serious crash involving Illinois State Police is under investigation in Cicero, Illinois, on Wednesday.
Multiple cars crashed on Cicero Avenue, including an ISP vehicle that was completely overturned.
It is not clear if any injuries were reported.
Cicero Avenue between 14th and 16th avenues is closed while crews work to clear the scene.
The cause of the crash is unknown at this time. CBS News Chicago has reached out to the State police for more information.
This is a developing story. CBS News Chicago will continue to provide updates.