An explosion at a chemical factory in western Japan has killed a firefighter and injured dozens of people.

Police said the explosion was reported today at chemical plant Nippon Shokubai Co. in the coastal industrial area of Himeji, about 100 miles west of Tokyo. Plant workers first reported a large bursting noise after a chemical tank exploded.

Television footage showed the plant covered with orange flames and black smoke rising to the sky.

The cause of the blast was under investigation.

Five hours after the explosion, firefighters were still fighting the blaze.

Public television NHK said 30 people were injured. Police said at least 17 people were injured, including seven other firefighters, two police officers and seven plant workers.

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