Emergency services have responded to an incident after a truck carrying cyanide rolled in the Mid West.
First responders rushed to the scene after reports two trailers loaded with solid cyanide, attached to a triple road train, had rolled on Mt Magnet Leinster Road, about 30km west of Sandstone, around 7.30pm on Tuesday.
Cyanide is a highly toxic chemical and can cause fatal poisoning.
Police said a 500m exclusion zone had been implemented.
Mt Magnet Sandstone Road between Mt Magnet and Sandstone is closed.
Emergency services are on site.
