MONROE — A 19-year-old Illinois man was critically injured after he rolled his car in an accident last week southeast of Browntown, according to the Green County Sheriff’s Office.

Trevor Hall, Machesney Park, was still in serious condition at the University of Wisconsin Hospital in Madison as of Monday afternoon, a hospital spokesperson reported.

The accident happened at about 3:45 p.m. Thursday, April 5. Hall was westbound in the W7800 block of County B, between Allen Road and Ullom Road, when his car went off the north shoulder and rolled several times.

Hall, the sole occupant of the vehicle, was ejected. He was taken by Green County EMS to Monroe Clinic, then airlifted to Madison by Med-Flight helicopter.

The accident remained under investigation as of Monday.