WA Police are treating a bushfire as suspicious after it was discovered in Forrestdale this week.
Strike Force Vulcan officers are investigating the fire that occurred at around 3pm on Tuesday and believe the fire started in bushland on Oxley Road.
A black coloured, older model Mitsubishi Pajero was seen in the vicinity of Commercial Road and Kargotich Road around 2:45pm, heading towards Oxley Road at around 3:05pm.
Investigators want to speak to the driver of the vehicle.
Anyone who was driving in the vicinity of Nicholson, Commercial, Kargotich and Oxley Roads in Forrestdale between 2:30pm and 3:30pm who has dash cam vision of the area is asked to come forward.
Investigators are calling anyone who saw the fire or any suspicious people or vehicles in the area in the vicinity of the fire is asked to contact Crime Stoppers on 1800 333 000 or make a report online at www.crimestopperswa.com.au.