Citigroup Inc. (C), the third-biggest U.S. bank, said its Banamex USA unit received grand jury subpoenas related to compliance with the Bank Secrecy Act and federal anti-money-laundering requirements.

The subpoenas were issued by the U.S. Attorney's Office for the District of Massachusetts, the New York-based company said today in its annual 10K filing with the Securities and Exchange Commission.

Banamex USA also received a subpoena from the Federal Deposit Insurance Corp. related to the same matters, Citigroup said.

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