UPDATE: The rescue helicopter has taken a woman to Royal Perth Hospital following a serious crash near Mundijong.
It is believed a car and a truck collided on Kargotich Road near Malek Drive in Mardella around 11.20am on Tuesday.
Firefighters had to cut the woman free after she became trapped in her vehicle.
MUNDIGONG CRASH - Kargotich road near mallick drive closed in both directions after car collided with truck. 1 x female taken to hospital via rescue chopper.
— Grace Fitzgibbon (@gracefitz8) February 12, 2019
more on @9NewsPerth pic.twitter.com/tM3Q6N9Cbo