Citigroup Inc (C.N) said additional government authorities have started probes of possible breaches of anti-money laundering laws at its Banamex USA unit. The Financial Crimes Enforcement Network, a unit of the U.S. Treasury, and the California Department of Business Oversight have asked the company for information on its compliance with the Bank Secrecy Act and anti-money laundering rules, Citigroup disclosed in an annual filing with the U.S. Securities and Exchange Commission on Wednesday.