Fire at a giant Stevenage pharmaceutical company has been contained by staff.
The alarm was raised shortly before 11am as fire broke out in a chemical lab at GlaxoSmithKline on Gunnels Wood Road.
Fire crews were dispatched to the scene and found the blaze out on arrival after onsite personnel used a chemical protection unit to extinguish it.
The cause was accidental, Herts Fire Service said.
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