The Ontario Provincial Police has shut down a section of Manning Road in Tecumseh after a serious crash late Wednesday night.
Manning was closed between Highway 401 and County Road 46, but reopened shortly after 8 a.m. Thursday.
Around 10:45 p.m. a car and a minivan collided near North Rear Road.
One driver suffered life-threatening injuries, while the other's injuries were less serious.
Police are still investigating the collision and ask anyone with information about it to call them at 1-888-310-1122, Crime Stoppers at 1-800-222-8477, or leave a tip online at www.catchcrooks.com.