A Guangdong family tried to sue the Sanlu Dairy Group yesterday over the tainted-milk scandal, but the local court declined even to receive the lawsuit and treated it as a petition. The lawsuit was submitted to Guangzhou Intermediate People's Court by lawyer Chen Beiyuan on behalf of Zhang Zhuoyu , a baby who developed kidney stones after drinking Sanlu formula. Also sued was the Dairy Association of China, for failing to carry out its supervisory function. But the Guangzhou Intermediate People's Court accepted the filed document through its petition office and said it would decide within seven days whether to accept the case formally. Caijing magazine reported that Zhuoyu's father, Zhang Xiuwen, said the baby had been fed Sanlu formula since he was born last November. The baby began to show fever and urinal failure in July. He was admitted to hospital and has been operated on twice to remove kidney stones. The only previous suit was by a family in Henan , and it is also pending a court decision. Yesterday, the Ministry of Health finally broke weeks of silence and released the latest figures of children treated in hospital because of tainted milk products. According to Xinhua, 10,666 children remained in hospital yesterday, and 36,144 children had recovered and been released. The ministry did not say how many had been diagnosed with kidney stones because of the tainted milk powder. Xinhua also reported yesterday that the authorities in Xinjiang had reopened an investigation into one of the four infant deaths suspected to be related to milk products tainted with melamine. Reuters calculated that the number of affected children had risen to nearly 94,000.