U.S. prosecutors believe FIFA President Sepp Blatter's top lieutenant made $10 million in bank transactions that are central to the bribery investigation of the world soccer body, a source familiar with the matter said on Monday.
Jerome Valcke, FIFA's secretary general, is described in an indictment filed in federal court in Brooklyn, New York, as an unidentified "high-ranking FIFA official" who in 2008 transferred the sum to another FIFA official, Jack Warner.
Valcke is not named as a defendant and has not been accused of any wrongdoing. He was not immediately available for comment.
Valcke and Blatter are the top two officials within FIFA.