THE RAC Rescue helicopter was sent to a serious two-car crash near Australind yesterday.
Police believe three or four people were injured in the crash on the intersection of Australind Bypass and Paris Road about 2pm.
FESA used the Jaws of Life to remove two people from a car.
A woman was airlifted by the RAC helicopter to Royal Perth Hospital.
Two children and a woman were transported to Bunbury Regional Hospital by an ambulance.
Four police vehicles, three fire trucks and three ambulances attended the scene.
Traffic coming from Paris Road on to Australind Bypass was diverted from the scene.