Detectives are appealing for witnesses after a serious crash in Oakford at the weekend.
Around 4.47am on Saturday, a blue Mitsubishi 380 sedan was driving north on Hopkinson Road when it left the road and collided with a wooden bollard fence and then a tree.
The 18-year-old female driver suffered minor injuries, while the 19-year-old male passenger was seriously injured.
Both were conveyed to Royal Perth Hospital.
Major Crash investigators are appealing for any person who saw the Mitsubishi 380 prior to the crash, or who witnessed the crash or has dash camera footage of the area at the time of the crash to contact Crime Stoppers on 1800 333 000, or report the information online at www.crimestoppers.com.au.
Dash camera, mobile phone vision or CCTV footage can be uploaded directly to investigators via this following link: