A 15-year-old boy riding a motorbike has suffered serious injuries after colliding with a Hyundai Getz.
Major Crash officers are investigating the crash which occurred in Wilson on Saturday night.
At about 11.40pm the boy was riding on Braibrise Road near Snow Street when he hit the car as it was turning into a driveway, police said.
The boy, whose bike was unregistered, was taken to Royal Perth Hospital, while the people in the car were uninjured.
Police are seeking witnesses who may have seen the vehicles driving in the Wilson area prior to the crash to call Crimestoppers on 1800 333 000 or report online www.crimestopperswa.com.au