UNITED NATIONS, Dec 1 (Reuters) - Outgoing United Nations Secretary-General Ban Ki-moon apologized to the people of Haiti on Thursday for the world body's role in a deadly cholera outbreak that has killed more than 9,300 people and was blamed on Nepali U.N. peacekeepers.

Haiti was free of cholera until 2010, when the peacekeepers dumped infected sewage into a river. The United Nations does not accept legal responsibility for the outbreak of the disease that causes uncontrollable diarrhea and has sickened 800,000 people. (Reporting by Michelle Nichols; Editing by Sandra Maler)

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