A single-vehicle rollover crash occurred in the 8000 block of Route 173, which is east of Greenwood Road, near Richmond early Monday morning. | Photo: Google Street View.

Two teens were seriously injured, including one who was ejected, after the stolen car they were in rolled over while fleeing from police near Richmond, authorities said.

The Hebron Police Department located a vehicle, which had been stolen from Racine, Wisconsin, around 12:30 a.m. Monday, according to the McHenry County Sheriff’s Office.

Officers attempted to stop the vehicle but it fled eastbound on Route 173 from Route 47 in Hebron, McHenry County Sheriff Spokesman Tim Creighton said.

Officers pursued the vehicle eastbound on Route 173 into unincorporated Richmond when the vehicle left the roadway in the 8000 block of Route 173, which is east of Greenwood Road.

It struck a few mailboxes and then overturned several times, Creighton said. One of the two teens in the vehicle was ejected.

One of Mercyhealth’s emergency field vehicles — called MD-1 — was called to the scene to help treat the two victims.

MD-1 vehicles are staffed by residency-trained emergency medicine physicians and they can help paramedics stabilize a patient before they are transported to the hospital from a scene.

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A LifeNet medical helicopter was also called to the scene.

A 15-year-old boy was flown to Advocate Lutheran General Hospital in Park Ridge with serious but non-life-threatening injuries.

A 19-year-old man was transported by ambulance to Northwestern Medicine Hospital in McHenry where he was taken into surgery. His injuries were non-life-threatening, Creighton said.

No further details were released regarding the incident or about any possible charges.