Cyclist killed in crash with a truck in WA

A cyclist has died after he collided with a truck in Western Australia's South West region during a long weekend.

Police say the crash happened just after 11.30am on Sunday near Binningup, forcing the northbound lane of the Forrest Highway to be closed.

The truck driver is assisting police with their investigation into the circumstances surrounding the crash and anyone else with information is urged to call Crime Stoppers.