Local fire crews have spent the early hours of Monday morning at the scene of two scrub fires in Dudley Park.
The fires started at Roy Tuckey Reserve around 1.30am.
It took firefighters an hour to extinguish the blazes which were in close proximity to each other.
"It appears these were deliberately lit fires and our colleagues from WA Police will be investigating," Falcon Volunteer Fire and Rescue said.
Anyone with information relating to this fire is asked to call Crime Stoppers on 1800 333 000 or report the information online at www.crimestopperswa.com.au.
Rewards of up to $25,000 are available for information that leads to the identification and conviction of an arsonist.
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