At least 50 firefighters are tackling a major blaze in Oxfordshire following initial reports of a gas explosion, police said.
Oxfordshire Fire and Rescue received a report of the explosion at Compact GTL Units 15 and 19 at Abingdon Business Park, Abingdon, shortly after 1300 GMT.
A 300-metre cordon has been set up and police said a number of roads have been closed, including Colwell Drive.
"We urge people to stay away," a fire service spokesman said on Saturday.
Oxfordshire Fire and Rescue has ten fire engines at the scene of the incident.
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