Police attempted to pull over a car in Mandurah before they sped off, initiating a chase.
A police pursuit broke out overnight in the Mandurah region.
Police attempted to stop a vehicle on Morfitt Street just before 1am.
The car then picked up speed and was seen doing over 100km/hr on Mandurah Road and Cooper Street.
The vehicle then successfully evaded police.
Anyone in the area who may have seen the incident is urged to call Crime Stoppers on 1800 333 000 or make an online report.