The Mundelein Police Department and Major Crash Assistance Team of Lake County investigates a serious rollover crash at Route 45 and Walnut Street in Mundelein Monday morning. | Photo: Joe Shuman/J. Shuman Photography (2022)

A man suffered life-threatening injuries after police say his vehicle rolled over, leaving him partially ejected and pinned underneath the car in Mundelein Monday morning.

The Mundelein Fire Department and Mundelein Police Department responded around 12:50 a.m. Monday to the intersection of Route 45 and Walnut Street for a report of a single-vehicle crash.

Mundelein Deputy Police Chief Jason Seeley told Lake and McHenry County Scanner that a vehicle was traveling northbound on Route 45.

The vehicle left the roadway, struck a tree and rolled over onto its side.

The Mundelein Police Department and Major Crash Assistance Team of Lake County investigates a serious rollover crash at Route 45 and Walnut Street in Mundelein Monday morning. | Photo: Joe Shuman/J. Shuman Photography (2022)

The 36-year-old male driver was partially ejected and became pinned between the vehicle and the ground, Seeley said.

Firefighters arrived and extricated the driver from underneath the vehicle. Paramedics transported him to Advocate Condell Medical Center in Libertyville.

Seeley said the man had suffered life-threatening injuries but his condition had stabilized later that morning and he remained hospitalized.

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No one else was inside the vehicle and police believe alcohol was a contributing factor in the incident.

The Mundelein Police Department and Major Crash Assistance Team of Lake County investigates a serious rollover crash at Route 45 and Walnut Street in Mundelein Monday morning. | Photo: Joe Shuman/J. Shuman Photography (2022)

The Lake County Major Crash Assistance Team was called to the scene to assist in the investigation due to the seriousness of the crash.

The northbound lanes of Route 45 were closed during the investigation and reopened before the morning rush hour.

No charges or citations have been issued yet as the investigation is still pending, Seeley said.