Emergency services are responding to a crash on the Forrest Highway in West Coolup.
The crash happened around 7.45am on Saturday between Heron Point Road and Old Bunbury Road.
It is understood a car and a bus collided.
It is not yet known if anyone was injured.
Motorists travelling on Forrest Highway in the West Coolup and Birchmont areas have been advised to drive with caution as there is reports of thick smoke.
The Forrest Highway has since reopened.
Nearly 50 tobacco stores closed, over five million cigarettes seized under new laws
The WA Health Department has closed almost 50 stores across the state after new tobacco and vape laws came into effect last month.
Yarloop man fined thousands, rods forfeited over illegal fishing haul
A 35-year-old Yarloop man has been fined more than $4700 and ordered to forfeit four fishing rods and a navigational plotter after Fisheries found him in possession of an illegal fishing haul.
Rockingham named a state hotspot for dog-related incidents against posties
Rockingham posties are being targeted by dogs more than any other suburb in WA.
Police uncover 2kg of meth during crackdown on impaired drivers in Mandurah
A recent crackdown on impaired drivers in Mandurah has led to the alleged seizure of two kilos of methylamphetamine.
WATCH: Police release vision of Barragup arsonist
Detectives have released vision of the moment an arsonist sets fire to a car in Barragup.
Local landholders encouraged to work together against invasive weed
Local landholders are being encouraged to work together to tackle one of Western Australia's most damaging environmental weeds.
Wellard family provided temporary accommodation after burst water pipe floods home
A Wellard family have been provided temporary accommodation after a Water Corporation pipe burst, flooding their home.
Elderly woman taken to hospital after crash on the Kwinana Freeway in Baldivis
Police are calling on witnesses to a crash on the Kwinana Freeway in Baldivis.
Pop-up ice skating rink glides back into Mandurah for winter school holidays
School holiday fun returns to Mandurah this winter from July 3 to 19.