WASHINGTON/NEW YORK (Reuters) – U.S. Federal Reserve Chair Janet Yellen met with a research firm that later published confidential information from the central bank, she said on Monday. Yellen met with Medley Global Advisors in June 2012, she said in a letter, months before the firm unveiled details of a September Fed meeting a day ahead of the publication of the central bank’s own record of the discussions. The Justice Department is investigating Medley over a possible leak of information from the Fed.