Kim Dotcom's lawyers have accused the FBI of an "illegal act'' after it emerged agents had left the country with cloned copies of computers seized during raids.
William Akel told the High Court at Auckland today that there were written agreements with government lawyers which meant the computers were meant to be kept under police guard.
The court has been told 18 hard drives were copied and taken to the US by FBI agents working in the NZ Police electronic crime lab.
The drives were seized during the January police raids which saw Dotcom and three colleagues arrested on US charges of criminal copyright violation.
Dotcom, Finn Batato, Mathias Ortmann and Bram van der Kolk had gone to court ahead of their August 6 extradition hearing to argue that the search warrant used by police was too broad.