A 55-year-old Caledon woman is dead after a collision in North Perth.

Perth County OPP says they were called out around 6 o’clock Monday night to a collision at the intersection of Perth Road 140 and Perth Line 91 in the Township of Wallace.

Police say it was reported that a tractor trailer and a Sport Utility Vehicle had collided at the intersection and that three occupants in the S.U.V. were seriously injured.

Emergency service responded and a passenger in the S.U.V., a 55-years-old female from Caledon, was pronounced dead at scene.

The other two occupants of the S.U.V. were transported to a local hospital with serious injuries.

The driver of the tractor trailer did not require medical treatment.

The cause of the collision is currently being investigated and anyone who witnessed it is asked to call police.