A serious crash involving multiple vehicles occurred on the entrance ramp from Lake Cook Road to Interstate 94 westbound in Deerfield. | Photo: Google Street View.

The state police said a 68-year-old man suffered life-threatening injuries after his car rolled over during a five-vehicle crash on an entrance ramp to I-94 in Deerfield Thursday evening.

The Deerfield-Bannockburn Fire Protection District and Illinois State Police responded around 5:18 p.m. Thursday to Lake Cook Road and Interstate 94 for a report of a multiple-vehicle crash with injuries.

The state police said troopers from District 15 arrived to find five vehicles involved in the crash, including one vehicle that was rolled over on its roof.

A preliminary investigation shows a 2002 Ford Explorer was traveling on the entrance ramp from Lake Cook Road to Interstate 94 westbound.

For unknown reasons, the Ford Explorer sideswiped a 2010 Ford Edge, 2014 Dodge Durango, and a 2020 Chevrolet Equinox.

The front of the Ford Explorer then struck the rear of a 2018 Jeep Cherokee, the state police said.

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The Ford Explorer continued traveling until it struck the left wall and rolled over onto its roof.

The driver of the Ford Explorer, a 68-year-old man from North Fort Myers, Florida, was transported by ambulance to a local hospital with life-threatening injuries.

The driver of the Ford Edge — a 61-year-old Gurnee, the driver of the Dodge Durango — a 42-year-old Grayslake man, and the driver of the Chevrolet Equinox — a 59-year-old Ingleside woman, were all uninjured.

The driver of the Jeep Cherokee, a 30-year-old Grayslake, whose vehicle was rear-ended during the crash, was also uninjured.

Lane 4 of Interstate 94 was temporarily shut down for the traffic crash investigation but traffic was still able to flow onto the highway, state police said.

It is unclear what caused the crash. It remains under investigation by the Illinois State Police.