The head of China's quality watchdog has resigned amid a growing scandal over melamine-contaminated milk.
China announced earlier this month that some locally made milk powder had been contaminated with the industrial chemical melamine, which can cause kidney stones.
As a result of the contamination four children have died, about 13,000 remain in hospital, 104 in a serious condition and overall nearly 53,000 children were made ill.
Li Changjiang stepped down "with the approval of the State Council", China's cabinet, Xinhua said and Prime Minister Wen Jiabao has apologised for the contamination.
Brunei, Singapore, Malaysia, Hong Kong, Taiwan, Japan, Bangladesh, Gabon, Burundi and the Philippines, have since place curbs on Chinese milk product sales.
Prime Minister Wen has promised to reform the dairy industry and to improve its regulation.