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The floating organisms at a water supply source in Mudanjiang City of northeast China's Heilongjiang Province remain unidentified even after analysis by scientists.

The Mudanjiang Bureau of Environmental Protection sent micrographs of the organisms to the provincial environmental protection department for identification on Wednesday, said the bureau's head Wang Qingbai.

The water supply in Mudanjiang has not been cut off after the organisms were detected at 2:00 PM on February 19.

A distillery in the neighboring city of Hailin, which emitted a great deal of distillers' grains into Hailang River, is to blame for the accident, according to Mudanjiang city government spokesman Wang Shuyin.

The distillers' grain fermented and accelerated reproduction of the aquatic organisms as the weather is getting warmer.

The water supply source of Mudanjiang is located at the lower reaches of the Hailang River, a tributary of the Mudanjiang River.

Local people have built three nets in Hailang River to block the aquatic organism.

(Xinhua News Agency February 23, 2006)