Royal Bank of Scotland said on Monday the Financial Conduct Authority (FCA) and other regulators have requested information about allegations the lender was involved in a global money laundering scheme.
RBS said in a statement that it has responded to the FCA and is in the course of responding to other regulators.
A Reuters report published earlier this month shone light on a Moldovan "Laundromat" probe into an alleged Russian-led money laundering scheme, in which $22.3 billion passed through Moldova using Russian shell companies and fictitious loans from offshore companies based in Britain in 2011-2014.
British lawmakers last week asked the local regulator to investigate claims in newspaper reports that UK banks including RBS, HSBC , and Standard Chartered were among those that did not turn away suspicious money transfers.
(Reporting By Andrew MacAskill, editing by Anjuli Davies)