The U.S. authorities have already imposed big fines on other banks for breaching sanctions against U.S. dollar payments involving Iran and other countries.
France's largest lender by assets said a "high degree" of uncertainty existed surrounding the fines that U.S. authorities could impose on the bank.
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"There is the possibility that the amount of the fines could be far in excess of the amount of the provision," the bank said in a statement, following discussions that took place in the first quarter of this year concerning U.S. dollar payments.
The bank also took a 100 million euro provision on Eastern Europe, which chief financial officer of the bank Lars Machenil said was a "prudent" decision.
The provision was taken out as a result of the "exceptional situation" in Eastern Europe the bank said, amid the latest developments in Ukraine. On Tuesday resulted the EU imposed asset freezes and travel bans on 15 Russian officials and politicians.
"This is not a specific provision, so it is more for uncertainty. Not knowing what embargoes or what the economic evolution could be, so we just took that provision as a precaution," Machenil told CNBC.