Montreal police say a 32-year-old man is in critical condition after his vehicle went over the wall of an overpass in Saint-Laurent.

Const. Jean-Pierre Brabant of the Montreal police says the incident occurred just before 3.a.m. on Henri-Bourassa Boulevard.

The driver lost control of his vehicle and hit a low wall of the overpass.

"From there he fell from the overpass and landed on the service road of the 40 East," Brabant said.

It took several minutes for firefighters to remove the man from the vehicle.

He was conscious when transported to a nearby hospital but in critical condition.

Critical but stable condition

By noon Tuesday, police said the man's condition had somewhat stabilized.

Police have also said that an undisclosed quantity of marijuana was found in the man's car, and they are testing his blood for drugs.

Police are also inspecting the driver's cell phone to see if he was using it at the time of the accident.

"It's highly possible that the cell phone caused the collision," said Montreal police Const. Manuel Couture