About 11.30pm, a red Hyundai Accent sedan was travelling on Admiral Road when, just after Wallangarra Road, the vehicle left the road and struck a tree.
The driver, an 18-year-old man, sustained minor injuries in the crash. A 15-year-old male who was a passenger in the vehicle sustained serious injuries. Both were conveyed by ambulance to Royal Perth Hospital for medical treatment.
Investigators are urging anyone who saw the crash, or the Hyundai Accent sedan in the area prior to the crash, to contact Crime Stoppers online at www.crimestopperswa.com.au or by calling 1800 333 000.
Anyone with dash-cam, CCTV or mobile phone vision relating to this crash is asked to upload the vision directly to investigators via the following link: https://wapf.au.evidence.com/axon/community-request/public/mcis2026270