SEVERE fire danger conditions at the start of the week had 40 career and volunteer firefighters attend a suspicious bushfire in Warwick and Hamersley on Monday.
Emergency services received a report of the fire in Warwick Open Space, near the intersection of Beach and Erindale roads about 11am.
It burnt through about 4ha, prompting the Department of Fire and Emergency Services to advise people in the area to be alert and motorists to slow down due to smoke.
Call Police Crime Stoppers on 1800 333 000 regarding suspicious fires.
Visit emergency.wa.gov.au, call 13 DFES (13 3337) or follow DFES on Twitter @dfes_wa for information on fires.