A driver has ben arrested following an early morning crash in Mandurah.
Police say a white Range Rover collided with a grey Honda Odyssey at the intersection of Allnutt Street and Mandurah Road about 3.40am on Friday.
The driver of the Range Rover, a 42-year-old man, suffered minor injuries and was taken into custody.
The driver of the Honda, a 73-year-old man, sustained serious injuries and was taken to Royal Perth Hospital by ambulance.
It is unclear why one of the drivers was arrested, but police say they are continuing to investigate the circumstances surrounding the crash.
Man charged after allegedly exposing himself to girl on Transperth bus in Lakelands
Firefighters on scene of Golden Bay house fire
Firefighters battle bushfire near Nambeelup
Alcoa Children's Festival cancelled due to severe weather
Man charged over crime rampage from Furnissdale to Kwinana
Damaging winds forecast for Harvey, Dwellingup, Pinjarra
Southern suburbs man claims $15 million Lotto win after eventually answering life-changing call from Lotterywest
Two women taken to hospital after Kwinana Freeway crash
Madora Bay man charged after police find stolen items on Nambeelup property