Motorcyclist seriously injured in North York collision

A motorcyclist has been seriously injured in a collision in North York, police say.

The crash happened in the area of Trethewey and Brookhaven drives, west of Black Creek Drive, after 8:30 p.m. Friday.

Police say a rider was thrown from their motorcycle as a result. They were taken to the hospital with serious injuries.

The cause of the collision is unknown.