WikiLeaks founder Julian Assange's former right-hand man has irrevocably destroyed 3500 unpublished files leaked to the whistleblower site including the complete US no-fly list, five gigabytes of Bank of America documents and detailed information about 20 neo-Nazi groups.

Daniel Domscheit-Berg, who left WikiLeaks last year after a falling out with Assange, revealed the document destruction in an interview with Der Spiegel.

WikiLeaks founder Julian Assange and his former right-hand man, Daniel Domschelt-Berg aka. Daniel Schmitt.

WikiLeaks has hit back, accusing Domscheit-Berg of being in bed with US intelligence agencies and of jeopardising the leaking of “many issues of public importance, human rights abuses, mass telecommunications interception, banking and the planning of dozens of neo-nazi groups”.

Along with the thousands of files, Domscheit-Berg also took the entire Wikileaks encrypted submission system with him on his way out to start a rival site, OpenLeaks. It has resulted in WikiLeaks being unable to receive leaked documents online for a year, with the site instead resorting to snail mail via an Australian P.O. Box at the University of Melbourne.