Seven dead following horror weekend on Western Australian roads

A woman has died when a car rolled in Western Australia's Wheatbelt region, the state's seventh road fatality on the Labour Day long weekend.

The woman died after crashing on Corrigin-Kondinin Road on Sunday afternoon while the driver, also female, sustained minor injuries.

Just after 7am on Sunday, a passer-by discovered a 23-year-old man had died after crashing his car into a tree on Northam-Pithara Road, east of Perth.

A 21-year-old man, who was a passenger in the vehicle, is in hospital with non-life threatening injuries.

On Saturday, a 26-year-old man from the Northern Territory and two men from WA's Wheatbelt region, aged 25 and 26, died after their car hit a tree in Bruce Rock.

Two men, both aged 25, died on Friday evening when the motorcycle they were riding collided with a truck in Bunbury.