Roads have reopened following an incident in the Firth Road area of Livingston.
Around 8.50am on Thursday, police received a report of a potentially hazardous material at a premises within Houstoun Industrial Estate.
Officers attended the scene alongside crews from The Scottish Fire & Rescue Service.
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A number of people were evacuated as a precaution and members of the public were advised to avoid the area.
Police later said that the incident was contained and there was no risk to the wider public.