GSOC is investigating a crash in which a motorcyclist was critically injured after hitting a garda patrol car.

Just before 5am this morning, a motorbike and a garda patrol car collided at the junction of Sean McDermott Street and Buckingham Street in Summerhill in Dublin 1.

The motorcyclist - a man in his early 20s - was critically injured in the crash and has been transferred to Beaumont Hospital with serious head injuries.

A team of investigators from the Garda Ombudsman Commission has examined the scene because a garda patrol car was involved - as is normal procedure in cases of death or serious harm.

GSOC is also appealing for any witnesses to this morning's crash to come forward.