New York businessman and Democrat fundraiser Hassan Nemazee used fake documents to borrow $74 million to repay a loan from Citigroup Inc. last month, and he may have defrauded another bank of more than $100 million, prosecutors said.

In a letter to the judge in the case dated Tuesday and made public Wednesday, Assistant U.S. Attorneys John M. Hillebrecht and Daniel W. Levy said Nemazee obtained a line of credit by using the same type of fake documents — fake account statements and forged signatures — that he used to fraudulently obtain the $74 million loan from Citigroup's Citibank unit.

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