Swiss banker Rudolf Elmer was found guilty Wednesday of violating Switzerland’s stringent banking secrecy laws. But before flying to Zurich to stand trial, Elmer held a news conference Monday with WikiLeaks’ Julian Assange at London’s Frontline Club.

At the press event, Elmer handed Assange two discs containing information that purportedly identifies more than 2,000 prominent individuals and businesses that have persistently engaged in tax evasion.