Societe Generale SA, Royal Bank of Canada, and Bank of America Corp. are among nine additional banks that were subpoenaed in New York and Connecticut’s probe of alleged manipulation of the London interbank offered rate (Libor), Bloomberg News reported yesterday. The subpoenas, issued by New York Attorney General Eric Schneiderman starting in August, bring to 16 the total number of banks that have been subpoenaed in the states’ investigation. Schneiderman and Connecticut Attorney General George Jepsen are jointly investigating claims that banks rigged the Libor, a worldwide benchmark for borrowing. Florida Attorney General Pam Bondi has also issued subpoenas to more than a dozen financial institutions, including UBS AG, Deutsche Bank AG and HSBC Holdings Plc.