10:25 a.m. update:
The Ministry of Transportation is reporting that one lane of Highway 17 is now open near Desbarats.
The lane closure is due to a collision in the area.
Original 9:25 a.m. information:
SooToday has received a number of reports indicating that all lanes of Highway 17 are closed in the Desbarats area.
The cause of the closure has not been confirmed.
SooToday will post additional information as it becomes available.