A 28-year-old motorcyclist has died after being injured during an event at Barbagallo Raceway on Saturday.
It is believed the man was competing in the State Road Racing Championships when his bike left the track and entered a sand patch.
He was thrown from the vehicle and struck a tyre wall.
Emergency first aid was administered at the scene and the man was rushed to Royal Perth Hospital, but he was unable to be revived.
WA Police is investigating the circumstances of the death and a report will be prepared for the Coroner.