A replacement ambulance has been dispatched after two ambulances were destroyed by fire east of Perth.
Police are investigating the possibility of arson following the blaze at a St John Ambulance building on Joaquina Street in York about 1am on Saturday.
The building and two ambulances were significantly damaged by fire, with the damage bill estimated at $1 million.
A replacement ambulance was sent immediately from Northam "so the town was not without an ambulance service", a St John Ambulance spokesman said.
The arson squad has been investigating the charred remains of the York building.
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Police are appealing to the public to come forward with any information about the fire.
