Police Minister Anne Tolley has stonewalled reporters asking about what's been described as inconsistent evidence given by a senior policeman to the High Court.
Internet entrepreneur Kim Dotcom has been back in court on Wednesday asking for access to the evidence against him, including material illegally gathered by the Government Communications Security Bureau.
Detective Inspector Grant Wormald told the High Court at Auckland last month that apart from the police, to his knowledge, there was no other surveillance of Kim Dotcom.
Mr Dotcom's lawyer, Paul Davison, says that's inconsistent with what's now known about the bureau's involvement.
The minister says it's inappropriate for her to comment on court proceedings.
Prime Minister John Key fielded yet more questions, including whether any material gathered illegally was shared with American authorities.
Mr Key says as far as he's aware, the information was only used by the New Zealand police, for the raids on Mr Dotcom's Auckland mansion.
He is fighting extradition to the United States to face copyright, money laundering and fraud charges.
Mr Dotcom says the whole case against him could be compromised by evidence that has been illegally gathered.
Court releases Ministerial Certificate
Also on Wednesday, the High Court at Auckland released the Ministerial Certificate that blocked information about the GCSB's involvement in the Dotcom case.
The certificate was signed by deputy Prime Minister Bill English, who was acting Prime Minister while John Key was overseas.
It was signed after Mr Dotcom's lawyer requested from Crown Law all information relating to the case that was intercepted by the GCSB and provided to police.
Mr English says on the certificate that he consulted the director of the GCSB and that release of the information was likely to prejudice the security of New Zealand in relation to the detection or prevention of serious crime and would compromise the bureau's functions.