An Illinois man took police on a high-speed chase before crashing into a car and rolling over on I-43 at Port Washington Road in Mequon shortly before 9 p.m. on Saturday. The man was wanted for possibly hitting a pedestrian earlier in the evening in Sheboygan County.

After possibly hitting the pedestrian in Sheboygan, the man fled the scene and headed south. A description of his car and a partial license plate was provided to law enforcement.

At 8:40 p.m. an Ozaukee County Sheriff's Deputy was monitoring traffic on I-43 near Pioneer Road in the town of Grafton when he spotted the suspect's vehicle heading southbound. The deputy tried to perform a traffic stop, but after briefly pulling over, the suspect fled again.

The suspect led police officers on a high-speed chase with a deputy hitting speeds above 110 mph. The suspect then hit another southbound vehicle which caused him to lose control and roll multiple times on I-43 at Port Washington Road. The motorist that was struck by the suspect was not injured.

The suspect was taken to St. Mary's Ozaukee Hospital by Mequon Paramedics, but needed to be transported by Flight for Life to Froedtert Hospital in Wauwatosa for serious injuries. Alcohol is believed to be a factor in this case.

The suspect is identified as a 26-year-old male from Illinois.

Due to the crash, southbound lanes on I-43 were closed from Mequon Rd. to Brown Deer Rd. for about two hours, but are now open.

Mequon Police Department and Milwaukee County Sheriff's Department assisted our agency with this investigation.