Shanghai (ANTARA News) - Chinese authorities have confirmed that 21 people were killed and one was missing after a tug boat undergoing sea trials sank in the Yangtze River, the state-run Xinhua news agency reported on Saturday.

The 30-metre (98-ft) boat had 25 people on board when it sank on Thursday, including eight foreigners - four Singaporeans, an Indonesian, a Malaysian, an Indian and a Japanese, it said.

Three people, all Chinese, had been rescued. All eight foreigners died.

Sembcorp Marine Ltd, a Singapore-based shipbuilder, said on Friday the tug boat that its subsidiary, Jurong Marine Services Pte Ltd, had planned to charter sank during a sea trial. Three of the companys employees were on board.

Sembcorp Marine is part of Sembcorp Industries Ltd , an industrial conglomerate with Singapores state investor Temasek Holdings being the biggest shareholder.

Xinhua said the 368-tonne boat was built by Anhui Bengbu Shenzhou Machinery Co. Ltd. in October.

Editor: Priyambodo RH
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