"A former Swiss banker was on Monday due to hand over files to WikiLeaks which he alleges detail attempts by wealthy business leaders and lawmakers to evade tax payments.

"Rudolf Elmer, a former employee of Swiss-based Bank Julius Baer, told Britain's Observer newspaper on Sunday that the documents include details of about 2,000 accounts held in offshore financial centers. He says the account holders include "high net worth" celebrities, business leaders and lawmakers from the U.S., Britain and Asia.

"Elmer, who has previously leaked banking documents to the secret-spilling site, was scheduled to hold a news conference later Monday at London's Frontline Club with a WikiLeaks representative. Vaughan Smith, the owner of the Frontline Club, said he couldn't say who the representative would be."

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