A St John Ambulance has been sent to a serious motorcycle accident in Mundaring this afternoon.
The accident was reported to police after 12.35pm.
Early reports from a St John Ambulance spokesperson suggest the male motorcyclist is unconscious at the scene.
The accident occurred when the rider hit a tree at the corner of Mundaring Weir Road and Ashendon Road.
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The rider is thought to have serious injuries.
More to come.