A motorcyclist was critically injured in a collision with a delivery truck in San Francisco on Sunday morning, police said.

The motorcyclist was traveling south on Van Ness Avenue around 7:45 a.m. when he was struck by a northbound delivery truck that was making a turn at Hayes Street, police said.

The motorcyclist, a 25-year-old man, was taken to a hospital with life-threatening injuries.

The driver stayed on the scene and was not arrested, police said.