Fire fighters battled through hot and windy conditions to control fires caused by a series of suspected arson attacks across Perth and Busselton yesterday.
Firefighters were called to several small fires in Middle Swan, Eden Hill, Whiteman and Mirrabooka between 6.30pm and 7.30pm.
A Department of Fire and Emergency Services spokesman said officers managed to put out all of the fires before they got out of control but a large number of resources were deployed.
Fire crews are returning to check for hot spots at a site in Busselton this morning that was yesterday the site of an out of control blaze which sparked an emergency evacuation warning to nearby residents.
The warning was issued about 3pm when the fire started between Queen Elizabeth Road and Doyle Road near the Ambergate Nature Reserve.
Residents were warned to leave their homes or prepare to actively defend them.
The fire ripped through 50 hectares. Investigation revealed multiple ignition points in the scrub.
Arson squad detectives will continue to investigate both fires today.