Two sheds have been badly damaged by fire at a property in Mandurah.
The blazes started just before 5am on Monday, October 14 in the backyard of the home on the corner of Ormsby Terrace and Aileen Street.
A Department of Fire and Emergency Services spokesperson said one shed was completely destroyed and the other was partially damaged.
It took firefighters around 20 minutes to extinguish the blazes.
The cause is believed to be suspicious.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000.