Firefighters are on the scene of a diesel spill in Oakford.
It happened on Hopkinson Road near the intersection of Abernethy Road just before 11am on Monday.
"Diesel has spilled on the road after a traffic accident involving a truck," a DFES spokesperson said.
Motorists have been advised to avoid the area.
A number of roads have been closed including Hopkinson Road between Thomas Street and Abernethy Road.
"As a precautionary measure, people in the area should remain inside, out of the smoke or fumes, with doors and windows closed. Air conditioners should also be switched off."
Female passenger dies after horror Kwinana Freeway crash
Havana Brown and Thelma Plum to headline 2026 Crab Fest
Hazmat warning issued after rubbish truck catches fire in Kwinana Beach
WA Police ramp up patrols near schools as students return for Term 1
Fire engulfs car then spreads to bushland in Oakford
Community bands together to provide essential school supplies to local children
Detectives continue to hunt man who dragged woman by hair into bushes in Halls Head
Woman airlifted to hospital following South Yunderup crash
Shire of Murray celebrates outstanding citizens