Authorities in Hong Kong told Beijing to start an inquiry on how melamine got in Chinese eggs, the media reported on Monday.
Hong Kong food inspectors have found chicken eggs tainted with melamine, the industrial chemical at the heart of the enormous scandal related to Chinese infant formula. The eggs were imported from northeastern China.

Several Chinese milk powder products were tested positive for the toxic industrial chemical, which led to more than 50,000 Chinese children falling ill and four babies dying of kidney failure.

Because melamine was found in the dairy products, health officials voiced concern about the fact that a wider amount of foods produced in the country could be contaminated with the industrial chemical, which is usually used to create durable dishware and clear resins.

In an attempt to avoid a worse situation, at the end of September, the Food and Drug Administration temporarily banned the sale and import of 10 dairy products from China, candies, buns and biscuits counting among them. At the beginning of the month, Chinese health officials found the chemical in powdered infant formula. Starting them, it has been discovered in countless of other products.

Consequently to this week’s findings, Wal-Mart, the world's largest public corporation by revenue, announced Tuesday that it had pulled an important brand of eggs made by China's Dalian Hanwei Enterprise Group from all of its stores in China, said Mu Mingming, spokeswoman for the company.

Furthermore, "we shall also test chicken meat and we shall also look at offal, for example chicken kidneys and pig kidneys," Health Secretary York Chow said.