HONG KONG: Hong Kong’s food safety watchdog said on Sunday that two China-made chocolate products sold here by British sweet maker Cadbury contained dangerous levels of melamine.

The city’s Centre for Food Safety said in a statement that the two products—Dairy Milk Cookies Chocolate and Dairy Milk Hazelnut Chocolate, both sold in five-kilo bulk packs—contained unacceptable levels of the toxic chemical.

Both products were among 11 recalled by Cadbury in Hong Kong, Taiwan, and Australia last week, after the company said its own tests had “cast doubt on the integrity” of some items made at its Beijing plant.

The Centre said six other Cadbury products were tested and found to be safe for consumers. The remaining three products could not be tested due to lack of a sufficient sample.

Four children have died and some 53,000 have fallen ill in China after drinking milk or milk products laced with melamine, which is usually used in making plastics.

Some manufacturers had been using the chemical to make watered-down milk appear to have a higher protein content.