The wealth management arm of Morgan Stanley is being probed by the Federal Reserve regarding the controls it has in place to prevent wealthy foreign customers from laundering money, according to a report from the Wall Street Journal.

The Fed is scrutinizing how Morgan Stanley vets foreign customers during onboarding, the report said. The agency has previously found the bank’s due diligence and anti-money laundering (AML) controls to be lacking, according to the report, and has privately reprimanded the bank for not making required changes.