A new probe of Swiss bank Credit Suisse discovered 890 previously undisclosed accounts with potential Nazi links, a U.S. senator said on Tuesday, amid efforts to shine a light on what he said was the bank’s hidden role in World War Two crimes.

Holders of the wartime accounts included the German Foreign Office, the SS paramilitary organization and a German arms-manufacturing company, U.S. Republican Senator Chuck Grassley told reporters in a briefing.

He gave no details on how much money might have been held in the accounts and their current status.

The organizations were part of the Nazi apparatus under German leader Adolf Hitler that enabled the Holocaust, which killed about 6 million Jewish people.