The Ontario Provincial Police in Essex is investigating after two motorcycles collided head-on Thursday night, sending both riders to the hospital.
Police said one of them suffered life-altering injuries.
It happened just before 7:30 p.m. on County Road 50 at Lypps Beach Road near Harrow.
The OPP closed County Road 50 between Wright Road and County Road 41 for several hours. It reopened early Friday morning.
Police ask anyone with information about the crash to contact them at 1-888-310-1122, through Crime Stoppers at 1-800-222-8477, or online at www.catchcrooks.com.
The investigation is ongoing, and police say they will provide further updates when they are available.