One person has suffered life-threatening injuries following a crash in North Dandalup.
Police say a truck and a car collided on the South Western Highway near Wades Road around 9.05am on Wednesday.
A man, aged in his 60s, has since been airlifted to Royal Perth Hospital.
The South Western Highway is closed between Del Park Road and Morrell Road.
Motorists are advised to avoid the area and to seek alternative routes.
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