BEIJING - McDonald's on Monday confirmed that it has not signed any deals with group-purchase companies, despite its discovery that discounts for its products were sold on one of China's most popular group-buying websites.

"We did not authorize any site to introduce offers for our products," said Weng Xiaomeng, a communications officer for McDonald's Beijing. "Our operating department will take any follow-up action to deal with this, including legal approaches."

Gaopeng, a joint venture between Groupon in the United States and Tencent in China, started offering a discount on a McDonald's set meal last week and instantly attracted 821 orders.