About 1.15pm, a black Toyota Corolla sedan and a white Hyundai LM station wagon, travelling in opposite directions on West Coast Highway, collided near Alfred Road West.
The driver of the Hyundai, a 77-year-old woman, and her 85-year-old male passenger, sustained critical injuries and were conveyed by ambulance to Royal Perth Hospital.
The driver of the Toyota, a 27-year-old man, was not injured.
Investigators are urging anyone who saw the crash, or either vehicle travelling 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/swanbourne10…