BEIJING (Reuters) - At least a dozen shoppers, many of them retirees, were injured in a rush to buy cheap cooking oil and eggs on offer at a supermarket in the eastern Chinese city of Nanjing, according to a local newspaper.

Four were taken to the hospital, including a 58-year-old woman who broke several bones. The oldest, a woman surnamed Wu, was 81, the Yangtze Evening News reported on Wednesday.

A stampede at a store in Chongqing last year killed three and injured dozens. The Chinese government responded by ordering supermarkets to control special promotions.