Kentucky Fried Chicken has offered a public apology on the mainland after two of its products were found contaminated with the cancer-causing Sudan 1 dye. The company also pledged to investigate the contamination and trace the supplier responsible for it. The public apology comes just a day after the discovery. Jamieson Wang Qun, senior public relations director for Yum Restaurants China which is KFC's parent company on the mainland, said the sale of New Orleans chicken wings and chicken burgers had been suspended at more than 1,400 KFC outlets on Wednesday after they were found tainted with Sudan 1, a banned ingredient in foods. A spokesman for KFC in Hong Kong said no contamination had been found at its outlets. In a statement on Wednesday, Yum said: 'We are very sorry for this food safety incident, and would like to apologise to the public.' Ms Wang said the company would destroy all the contaminated seasonings, supplied by American company Griffith. 'We are reconsidering the choice of our supplier,' she said. The chicken wings would be on sale within a week, while the burger would be shelved permanently, she said. Another discovery of the carcinogenic red dye was made in Zhuhai , where food safety authorities recalled seven flavours of Doll brand instant noodles. A staff member at Zhuhai's Food and Drug Administration said the authorities had recalled more than 6,000 boxes of the noodles after an emergency meeting on Tuesday. Huang Jing Hai An Yong Nan Food Company, which produces the noodles, said only four flavours were contaminated with the carcinogenic dye. Company deputy general manager Chang Yongming said the tainted noodles were sold mainly in the Pearl River Delta region, excluding Hong Kong and Macau. Mr Chang said more than 15,000 boxes of the tainted noodles had been recalled in the region after the company was alerted to the presence of the toxic Sudan 1 dye on March 8. Mainland products from five brands of food and one brand of seasoning have been reported to contain Sudan 1 since Britain's Food Standards Agency announced the discovery of the dye in chilli powder produced by Premier Food last month.