Police involved in the Urewera dawn raids had still not fully co-operated with the agency investigating their actions five years after the controversial operation.
Recent briefings from the Independent Police Conduct Authority to Justice Minister Judith Collins said investigators still wanted to interview officers involved in the raids which saw roads blocked and homes searched by armed police.
The difficulties in securing an interview will not stop the release of the IPCA's report into the 2007 raid, which is expected just weeks after the final legal hurdles were removed this week. The Supreme Court rejected an attempt to appeal against firearms convictions by the "Urewera Four".
The four, including Tuhoe stalwart Tame Iti, were the only people left facing charges of the 17 arrested in connection with the October 2007 raids. The police sought charges under the Terrorism Act after filming weapons training in the Urewera Ranges but were left with a handful of firearms charges after the courts ruled evidence to be inadmissible.