A 34-year-old man has been taken to hospital after a crash in Byford.
A Mitsubishi Lancer and a Holden Commodore collided at the intersection of Hopkinson Road and Orton Road around 9.45pm on Monday.
The force of the crash caused the Lancer to roll onto its roof, trapping the rear passenger.
The passenger received serious injuries and was taken by ambulance to Royal Perth Hospital.
The 23-year-old male driver of the Lancer and the 21-year-old male driver of the Commodore were not injured.
Investigators are urging anyone with dash-cam or mobile phone vision of the Mitsubishi Lancer or Holden Commodore travelling in the area prior to the crash, to upload the vision via this link: https://wapf.au.evidence.com/axon/citizen/public/seriouscrashbyford150321

Pop-up ice skating rink glides back into Mandurah for winter school holidays
Federal opposition leader Angus Taylor sits down with local business owners in Mandurah
Police search for missing man last seen leaving Rockingham Hospital
West Aussies urged to be on high alert after surge in winter house fires
New $3.4 million boardwalk to be constructed at Lake Clifton thrombolites
City of Mandurah rolls out new tactile bin lids, accessibility stickers to support residents with low vision
Driver dies in hospital after Australind crash
Welfare concerns for woman with dementia last seen in Cooloongup
Charges laid over fatal West Coolup crash
