Local fire crews were called out to a number of grass tree fires in Dawesville overnight.
Falcon Volunteer Fire and Rescue attended the fires on Estuary Road around 1.30am on Friday.
Mandurah Police also patrolled the area.
Anyone who saw any suspicious activity in the area at the time is urged to contact Crime Stoppers on 1800 333 000.
Locals urged to look out for man who removed electronic monitoring device
Detectives are looking for a man who removed his electronic monitoring device and could be in the Mandurah area.
Four charged over brutal Warnbro home invasion allegedly linked to illicit tobacco trade
Four men have been charged over an alleged brutal home invasion in Warnbro that saw two other men bashed and stabbed.
WATCH: Whale beached at Long Point
A humpback whale has beached itself at Long Point in Port Kennedy.
City of Rockingham records steep increase in animal cruelty complaints related to untreated medical conditions
RSPCA WA has recorded a 70 per cent increase in animal cruelty reports relating to pets suffering with untreated medical conditions in the City of Rockingham.
Accused dirt bike hoons charged by Mandurah Police
Mandurah Police have caught up with two children accused of ripping up a Halls Head sporting oval on a dirt bike.
Heavy rainfall, thunderstorms to lash Mandurah down to Busselton
The Bureau of Meteorology has issued a storm advice for the South West of WA including Mandurah and Bunbury.
Drivers escape serious injury after West Pinjarra, Baldivis crashes
It's been a busy morning for emergency services responding to separate crashes in West Pinjarra and Baldivis.
Police investigate stabbing of two men at Warnbro home
Police are investigating the stabbing of two men inside a Warnbro home.
Shark sighted in Dawesville Channel
A great white shark has reportedly been spotted inside the Dawesville Channel.
