Prosecutors in the U.S. are said to have been probing Japan's largest bank since late last year on alleged violation of anti-money-laundering rules involving North Korea.<br />According to a report in the New York Times, Mitsubishi UFJ Financial Group was subpoenaed for deliberately ignoring an internal filter designed to keep it from working with entities on international sanctions lists.<br />This includes failing to set up a system to check the identities of some Chinese doing business along the North Korean border.<br />The report said it wasn't clear whether prosecutors have evidence North Koreans laundered money through the bank, but a chief concern was the "holes in the system", designed to trace such transactions.<br />The bank has been fined by the U.S. before for removing and hiding information from its records about transactions involving parties in countries like Iran and Myanmar. <br />
