According to a Danish newspaper, a whistleblower had warned Denmark's biggest bank in 2013 against Russian President Vladimir Putin and Russia's spy agency using its Estonian bank branch for money laundering.
Denmark's Berlingske daily said today that the Danske Bank leadership knew "of far more serious conditions than previously stated."
Danske Bank is reported to have shut down 20 Russian customer accounts in 2013. The move was followed by a whistleblower's report alleging its Estonian branch to possibly had been involved in illegal activities.
The clients' identities were kept secret at the time. Danske Bank did not comment on the matter.