The scandal exploded after German authorities paid a former Liechtenstein bank employee €4.2 million ($5.4 million) for a CD containing the names of hundreds of people with accounts there.
This prompted countries around the world to launch their own investigations, as well as international criticism of Liechtenstein for its tradition of banking secrecy.
Deutsche Post’s Klaus Zumwinkel was implicated in the affair, resigning after police raided his villa. He was accused of avoiding €1.2 million in taxes he should have paid on investment profits of €2.5 million earned in Liechtenstein, the Sueddeutsche Zeitung daily reported on Friday.