Arson squad are investigating the blaze.
Authorities said fire ripped through a home in Commercial Road in Forrestdale around 3am on Saturday.
Sixteen firefighters attended the scene to extinguish the blaze.
One man was found deceased at the scene, it's believed he was inside the structure during the time of the blaze.
Arson squad will investigate the cause of the fire today.
Peel Thunder's Bo Allan becomes an Eagle
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Christmas on the Murray 2024
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Christmas cheers returns to Mandurah
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Winners announced for the 2024 Alcoa Peel Business Excellence Awards
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