(Photo by Railyn Glover/Facebook)

Police and emergency crews are attending the scene of a major multi-vehicle incident on Pat Bay Highway this afternoon.

Three cars, a semi-truck, and a tractor-trailer collided in the northbound lanes of the Pat Bay, between Royal Oak and Haliburton.

Saanich Police and BC Ambulance Services are on site, but there is currently no word on injuries.

Traffic is being impacted, and police advise commuters to expect delays or take an alternate route.

More to come.