BBC Russia has reported that Dmitry Vasiliev, the former chief of Russian cryptocurrency exchange Wex, has been arrested in Warsaw, Poland. Wex, which was previously known as BTC-e, was a well-known "dark" exchange in the early days of the cryptocurrency industry. It is alleged to have laundered funds for numerous high-profile crypto hacks, including the notorious Mt. Gox incident. Although Vasiliev is regarded as innocent within Poland's jurisdiction, other countries such as Kazakhstan have an open fraud case against the elusive figure and as such, have reportedly engaged in discussions surrounding the possibility of extradition.