BNP plans to slash its dividends and issue billions of euros of bonds to pay the fine, the Wall Street Journal said.
This is alleged to have taken place between 2002 and 2009.
The reported size of the fine could almost wipe out BNP's entire 2013 pre-tax income of about $11.2bn.
In April, BNP Paribas said it had set aside $1.1bn to cover the cost of US penalties, but warned that the 'amount of the fines could be far in excess of the amount of the provision'.
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