A fire has ripped through a fuel pipeline at the Sterlitamak petrochemical plant in Russia's Bashkiria region after an explosion and injured three people, local authorities are reporting.
Images are emerging of firefighters trying to extinguish the blaze and emergency services have said the fire had been brought under control.
It is not clear what has caused the incident.
The plant, located 1,500 km (930 miles) east of Moscow, produces rubber and high-octane additives for fuel and jet fuel.
