A Perth policewoman is suffering leg injuries after she got pinned between a car being chased by officers and another vehicle.
Officers attempted to stop a car when it became stuck in traffic at Morley Drive and Flinders Street at Yokine on Tuesday.
The policewoman walked up to the vehicle and while trying to arrest the occupants, the driver reversed, pinning her between the cars.
WA Police says the officer's injuries are not serious but she will need ongoing treatment.
A 35-year-old South Lake man is being interviewed by police and two other people have been arrested.