New Zealand First leader Winston Peters has claimed in Parliament that raids carried out by the Security Intelligence Service in July last year were illegal.
The raids took place in Auckland when the SIS was investigating an alleged assassination plot against Fiji's Prime Minister Frank Bainimarama.
In Parliament on Tuesday afternoon, Mr Peters put a series of questions to the Prime Minister, who is also the Minister in Charge of the Security Intelligence Service.
He asked if the SIS had acted on the pretext of a fictitious assassination plot against the Fiji military regime.
Answering on behalf of the Prime Minister, Bill English said it was an operational matter so he couldn't reply.
Mr Peters: "Is it not a fact that the SIS acted on the pretext of a fictitious assassination plot against the Fiji military regime yet claimed there was credible evidence of the plot."
Mr English: "I don't intend to answer that question."