One person has been taken to hospital with serious injuries following a collision on Highway 401 in North York.
It happened in the westbound collector lanes of the highway near Keele Street.
Toronto Paramedic Services said they transported one person to a trauma centre with serious, but non-life-threatening injuries.
The cause of the collision is not yet clear.
All westbound collector lanes of Highway 401 are closed between Allen Road and Keele Street because of the collision, OPP say.