A multiple car crash has caused major traffic delays in Mandurah this morning.
A three car pile-up on Mandurah Road is causing traffic headaches for commuters this morning.
Just after 8.30 it's understood cars ploughed into the back of one another on Mandurah Road near Mandurah Terrace heading into town.
A second crash happened moments later in the same area, with one car colliding with the back of another car after suddenly breaking at the scene of the original crash.
Police have now blocked the right hand lane with traffic moving slowly into Mandurah.
One witness said she watched as two cars behind her were involved in the second accident.
"One car had its front end pushed up to the windscreen after crashing into the back of another car," she said.
Mandurah Crab Fest boasts huge range of free, family friendly entertainment
Fuel prices surge in Perth, Mandurah
Teen boys charged over Mandurah burglaries
Tragic update in search for missing man Robert Snyder
Premier Roger Cook to leave Kwinana electorate, move to Perth
Mandurah Marine Rescue's new vessel named in memory of nun who survived 1959 boating accident
Teen dies in motorbike crash at Waroona Dam
Shark alert issued after whale carcass reported at Preston Beach
Kwinana businesses to refuse serving students during school hours