Two people have been seriously injured in a car rollover in Golden Bay.
The crash happened at the intersection of Aurea Boulevard and Warnbro Sound Avenue around 3pm on Sunday.
A man aged in his 40s and a woman in her 20s were rushed to Royal Perth Hospital with critical injuries.
Two other women in their 40s were taken to Peel Health Campus with non-life threatening injuries.
Another person received minor injuries and was treated by paramedics at the scene.
Police are investigating the cause of the crash.
Anyone who witnessed the crash should contact Crime Stoppers on 1800 333 000.