A safety cordon has been put in place and residents have been told to shut their windows and doors following a large fire in Bridgwater.
Firefighters were called to reports of a fire at an industrial unit in Axe Road around 2pm.
Dramatic video footage showed huge plumes of black smoke pouring out of a building on the street.
Avon and Somerset Police put a safety cordon in place while residents living nearby were told to shut their windows and doors due to the smoke.
The fire has now been extinguished but emergency services remain at the scene.
A spokesperson for Devon and Somerset Fire and Rescue Service said: "Fire crews are still at the scene but the fire itself has been extinguished.
"They're staying there to damp down hot spots and once they get the all clear the fire investigators will start work.
"Eight fire engines plus specialist appliances were called out to the fire. The fire involved half of the building.
"The warning to keep windows shut will stand until the smoke has properly dissipated."