Authorities say a bushfire which posed a possible threat to lives and homes in Byford is suspicious.
The fire started near the intersection of Michael Street and Dougall Street around 1.40am on Friday.
It reached a watch and act alert with nearby residents urged to leave their homes or get ready to actively defend them.
An advice is now in place for the area, with the blaze contained and under control.
It has burnt through 5.5 hectares of bushland.
Anyone who saw any suspicious activity at the time of the fire should contact Crime Stoppers on 1800 333 000.
Havana Brown and Thelma Plum to headline 2026 Crab Fest
Hazmat warning issued after rubbish truck catches fire in Kwinana Beach
WA Police ramp up patrols near schools as students return for Term 1
Fire engulfs car then spreads to bushland in Oakford
Community bands together to provide essential school supplies to local children
Detectives continue to hunt man who dragged woman by hair into bushes in Halls Head
Woman airlifted to hospital following South Yunderup crash
Shire of Murray celebrates outstanding citizens
Outstanding community members honoured at Rockingham's 2026 Community Citizen of the Year Awards