Dotcom case: Spies under the spotlight

New Zealand Police have ramped up their efforts in the Kim Dotcom illegal surveillance case, interviewing more government officials accused of spying.

As the 'saga' continues to drag on, police say investigations into the January raid on Dotcom's home last year, named Operation Debut, will take longer due to the amount of questioning needed.

With a need to interview more Government Communications Security Bureau (GCSB) staff, the police have issued no timeon when a decision will be made.

"Further GCSB staff need to be spoken to and the information gathered to date needs to be analysed to assess what additional inquiries will need to be completed," wrote Detective Superintendent Peter Read.

Dotcom, who now has the right to sue the New Zealand government, was raided in his Coatesville mansion following illegal surveillance carried out on his home.

But as reported by TechDay at the time, Prime Minister John Key ordered an inquiry into GCSB after the raid, and even denied knowledge of the surveillance.

Yet Key was proven wrong, and eventually admitted he was briefed over the case in February 2012.

Dotcom has spoken of his intention to hold the GCSB accountable, but given the lengthy delays expected, the internet mogul will have to bide his time before seeking government revenge.