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.
Early voting for Secret Harbour by-election begins Monday
Welfare concerns for missing Swedish national last seen in Warnbro
Wanted man last seen in Golden Bay
Passenger critically injured in West Pinjarra crash
Unregistered painter fined for requesting hefty deposit from Singleton homeowner and not doing the job
Police hunt driver following dangerous Baldivis pursuit
Welfare concerns for boy last seen at Port Kennedy skate park
Rubbish truck catches fire in Baldivis
Driver injured in bus crash in Rockingham