Emergency services were kept busy in Mandurah on Tuesday night with crashes and fires stretching resources.
A motorbike blaze near Burley Street was contained by fire crews before police were called about 8pm.
At this stage it is not clear if the rider sustained serious injuries.
Emergency crews were later called to a crash on Allnutt Street near the train station about 9pm.
No serious injuries were reported, but police were called to the two-car crash which blocked traffic.
In Greenfields, fire crews brought a blaze at a reserve on Reynolds Avenue under control before 7pm, before being called back to a separate ignition in the same area just two hours later.
Both fires were deliberately lit, according to attending firefighters and police were notified.
Investigations are under way on all incidents.
Anyone with information on suspicious fires is asked to call Crime Stoppers on 1800 333 000.
