Update: A truck driver has died in a crash involving two trucks and a car in Serpentine this morning.
Firefighters were called to Karnup Road near Rapids Road about 10.35am after reports a cement truck, a road train and a car had crashed.
Police confirmed one driver was killed and another suffered serious injuries.
The RAC Rescue chopper was sent to the crash but was not required.
Career firefighters from Armadale and Rockingham and volunteer fire and rescue service firefighters from Armadale are at the scene.
Karnup Road is closed in both directions from Rapids Road and Walker Road.
Five people have been killed in a horror 24 hours on WA’s roads.
A mother and her unborn baby were killed in a crash on the Brookton Highway yesterday. Two men, believed to be a Kalgoorlie father and son, died in a fiery crash near Kellerberin this morning.