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.
Hayden Ballantyne signs with Rockingham Rams
Mayor reassures community that 'no decision has been made' to close 4WD access at Tim's Thicket, White Hills beaches
DBCA 'sick and tired' of illegal access to Port Kennedy Scientific Park
Mandurah homeless camp goes up in flames
Dawesville community shocked after kangaroo deliberately mowed down
Teens armed with knife, scooter charged over Rockingham Shopping Centre fight
Mandurah private school teacher charged with alleged sexual abuse of male student
Welfare concerns for missing Ravenswood girl
Detectives investigate Rockingham aggravated robbery