Prosecutors in the trial of the man who claims to have handed details of rich tax evaders to WikiLeaks say he has spent time on the Isle of Man.
Whistleblower Rudolf Elmer has gone on trial accused of breaking Switzerland's strict banking secrecy laws.
The former Swiss banker admitted on Wednesday he sent private client data to tax authorities as he went on trial for breaching bank secrecy.
Zurich prosecutors claim that he stole client data after being fired from his executive banking job in the Cayman Islands in 2002.
The 55 year old was among the first to publish private documents to WikiLeaks.
Prosecutors claim that after he lost his job he spent the next few years moving between the Isle of Man, Germany, Switzerland Austria and Mauritius.
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