Megaupload's Dotcom gains access to NZ spy records

"Plainly most of what is sought by the plaintiffs is relevant," High Court Judge Helen Winkelmann said in a written judgement.

"The plaintiffs are entitled to discovery of the items." Dotcom, who also goes by the name of Kim Schmidt, is a German national but with residency in New Zealand, which made it illegal for the GCSB to spy on him.

Prime Minister John Key has already publicly apologised to Dotcom for the illegal spying.

U.S. authorities are currently appealing a New Zealand court decision that Dotcom should be allowed to see the evidence on which the extradition hearing will be based. The High Court's latest decision is a further setback for New Zealand authorities acting on behalf of the FBI.

Since the initial raid, the courts have ruled that search warrants used in the raid were illegal, freed Dotcom on bail, unfrozen some of his assets to pay living and legal expenses, relaxed restrictions of travel and association, and ordered extensive evidence disclosure.

Dotcom is also selling some of his car collection, which includes a pink 1959 Cadillac convertible and 1957 Cadillac El Dorado, to raise funds. The extradition hearing for Dotcom and the other three defendants is now scheduled to be held in mid-2013.