An 18-year-old man has suffered a serious head injury in a car surfing accident in Baldivis.
Police and St John paramedics were called to the incident near the corner of Makybe Drive and Acrasia Road around 12.40am on Saturday.
It's believed the 18-year-old was on the roof of a silver Subaru Liberty when he fell as the car turned left onto Acrasia Road.
He received a serious head injury and was rushed to Royal Perth Hospital.
The driver of the Subaru, a 17-year-old boy, was taken to hospital for a blood test, as per standard serious crash protocols.
The investigation is ongoing.
CCTV, dash-cam or mobile phone vision relating to this incident can be uploaded directly to Investigators via this ink: https://wapf.au.evidence.com/axon/citizen/public/seriouscrashbaldivis011022
Anyone with information regarding this incident, or who saw the silver Subaru Liberty being driven in the Baldivis are prior to the incident, is asked to call Crime Stoppers on 1800 333 000 or report the information online at www.crimestopperswa.com.au.