One person was taken to hospital with serious, life-threatening injuries after a crash involving a tractor west of St. Marys.
Emergency crews were called to the single-vehicle collision on Perth Road 151 between Line 2 and Whalen Line around 9:30 p.m. on Wednesday. The farm vehicle, which was pulling a trailer, ended up on its side in the ditch.
The driver, a 40-year-old from Thames Centre, suffered injuries described as "life-threatening" and was taken to hospital for treatment.
The Stratford Police Service Traffic Unit is investigating the cause of the collision.
The section of Perth Line 151 was closed for several hours while investigators were on scene and debris was removed. It has since reopened.
Anyone with information about the collision is asked to call police.