Authorities in China have closed a dairy in Shanghai and arrested three of its executives after some of its milk products were found to be tainted with melamine.
The Xinhua news agency says some of the Shanghai Panda Dairy's products contained what it called unacceptably high levels of the industrial chemical.
Two years ago, melamine tainted milk was sold by the Sanlu Group, which was formerly part-owned by the New Zealand dairy cooperative, Fonterra.
