A three-year-old girl in Hong Kong has been treated in hospital for a kidney stone after drinking contaminated milk from mainland China, health officials said Sunday.

The girl, who was found to have a kidney stone in a check-up Friday, is the first Hong Kong victim of the scandal that has killed four babies and made thousands more children sick in China.

Hong Kong's Centre for Health Protection said the girl had been drinking a low-fat milk drink for 15 months made by Yili, one of the Chinese companies whose products have been found to be infected.

The girl, from the city's urban Hung Hom district, was treated in the Princess Margaret Hospital and discharged Saturday pending further follow-up tests.

Hundreds of worried parents have taken their children for check- ups in Hong Kong after giving them milk produced by the Chinese companies caught up in the tainted milk scandal.

Hong Kong withdrew all Yili products from shop shelves after finding traces of the industrial chemical melamine were found in samples after news of the deaths in China broke.

Health officials in the city of 6.9 million say children who have been drinking two or more glasses of affected products may have consumed potentially harmful amounts of melamine.

Hong Kong reverted to Chinese rule in 1997 after 156 years as a British colony but maintains an autonomous economic and political status from the rest of China.