An executive for the dairy firm at the centre of China's tainted milk scandal has pleaded guilty to charges that may incur the death penalty, reports say.
Tian Wenhua, former head of Sanlu, and three other executives are accused of producing and selling defective goods.
State media said the trial into the poisonings, which left at least six children dead and nearly 300,000 ill, ended with no immediate verdict.
Earlier, lawyers for Ms Tian told AFP news agency she had not entered a plea.
Investigations have shown that dairy producers in China watered down their milk in order to make their supplies go further so that they could make more money.
They then disguised what they had done by adding the industrial chemical melamine in order to artificially raise protein levels in the milk - making children ill.
Sanlu allegedly delayed revealing the practice even after baby illnesses rose, forcing its foreign partner, the New Zealand dairy firm Fonterra, to alert the Beijing government.
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