Two cars have collided near the intersection of Goddard Street and Dixon Road in Rockingham.
Initial reports suggested people could be trapped in both vehicles, and one car could be on fire.
All occupants are now out of the vehicles, and three people have non-life threatening injuries.
A male in his 80's is being taken to Royal Perth Hospital.
Two females - one in her 70's and one in her 50's - are being taken to Fiona Stanley Hospital.
St John Ambulance and DFES were on site.
Wanted woman known to frequent Mandurah, Rockingham, West Pinjarra areas
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Waikiki Beach Hotel to go ahead after liquor licence approved
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Man found critically injured outside Baldivis pub
A 35-year-old man is fighting for life in hospital after being assaulted in Baldivis.
Dawesville man charged with 38 child sex offences
A Dawesville man has been charged with a series of alleged child sex offences following an extensive investigation by Mandurah Detectives.
Mandurah land owners reminded to prepare properties for upcoming fire season
The City of Mandurah is reminding local landowners to prepare their properties for the upcoming fire season.
Winning $2.5 million Lotto ticket sold in Bertram
One lucky local is $2.5 million richer after taking out a share in Saturday's Lotto Superdraw.
Shark advice issued for White Hills Beach
A shark advice remains for a popular four-wheel-drive beach south of Mandurah after a whale carcass washed ashore.
Mayor reassures community after 13 trees removed from old King Carnival site
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State Government invests $5 million to help restore Peel-Harvey Estuary
The State Government is fulfilling an election commitment, investing $5 million to help restore the Peel-Harvey Estuary.