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HONG KONG, June 22 (Xinhua) -- A firefighter was killed Tuesday night in a deadly fire that broke out in an industrial building in Hong Kong.

Seven other firemen were injured when battling the blaze, which has been lasted for over 24 hours.

The fire broke out on Tuesday morning at a multi-storey industrial building in Hong Kong's East Kowloon area. It was upgraded to No. 4 alarm on Tuesday night.

Firefighters continued to battle the blaze on Wednesday morning, shooting water into the third floor as smoke kept billowing out.

Hong Kong Chief Executive Leung Chun-ying on Tuesday expressed sadness over the death of Fire Service Department Senior Station Officer Thomas Cheung.

The officer left behind a wife and a four-month-old baby, said Leung, who pledged to provide support for Cheung's family.