The RAC Rescue helicopter is en route to a serious crash in Narrogin, where a car has reportedly ploughed into a building.
Police and St John WA are at Park and Federal streets where the crash happened about 12.45pm.
Two people, a man and a woman both in their 30s, were inside the vehicle when it came to a crashing halt.
Firefighters and State Emergency Services volunteers were on the way and will help make the area safe once the occupants are safely removed.
The rescue chopper has also been dispatched to the scene, where it will help get any injured people to hospital.
More to come.