Greek police arrest man in $4B money-laundering case

A Russian man wanted in the U.S. for alleged money-laundering worth some $4 billion has been arrested in Greece, local police confirmed Wednesday.

The 38-year-old was detained in Chalkidiki, northern Greece, on Tuesday.

According to Greek police, the man -- whose name has not yet been released -- was "in charge of a criminal organization, which legitimized earnings from illegal activities".

Police said he was suspected of involvement in an estimated $4 billion laundered since 2011 though bitcoin exchanges.

The case is now in the hands of Greek prosecutors; the U.S. has requested his extradition.