Seven persons died due to gas poisoning at a paper mill in China's Guangdong province, authorities said on Saturday.
The incident happened on Friday night at Shuangzhou Paper Co. Ltd, Xinhua news agency reported.
Nine workers were trapped inside a sewage adjusting tank of the factory at the time. Firefighters pulled them out but seven died during treatment. Two are recovering.
The cause of fire is being investigated.
--IANS
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