But ING said in a statement on Wednesday those reports were misleading: what actually happened, the company said, was that the name of a sanctioned entity had accidentally been added to one field of a transaction in 2014. The mention was erroneous, was correcly stripped, and the transaction proceeded.

"This has been discussed with relevant U.S. authorities in 2014 and no further action has been taken," ING said.

A series of articles called the "FinCEN Files," launched onSunday by Buzzfeed News and the International Consortium ofInvestigative Journalists (ICIJ), detailed how several globalbanks moved large sums of allegedly illicit funds for decadesdespite red flags. The series sent bank stocks tumbling onMonday and prompted new calls for legislative reform.

ING shares, down 44% year to date, fell more than 9% on Monday after the reports first surfaced.

(Reporting by Toby Sterling, editing by Louise Heavens)