CityCenter did not disclose the buyer of the 392-room hotel located on the Strip. The deal is expected to close in the summer. The 47-story Mandarin Oriental was opened in Dec. 2009.
MGM Resorts and Infinity World Development Corp. each own a 50 percent stake in CityCenter. The property sale is the second by MGM this month.
The Las Vegas-based casino operator announced April 16 it would sell its 50 percent stake in the Grand Victoria Casino in Illinois.