"Due to the complexity of the scene, part of the clearing operation has incorporated the use of cadaver dogs as well as staff specially trained in dealing with large scale incidents of this nature."
Police were comfortable they would not discover any more casualties, but their work at the scene was far from over with and officers were expected to remain at the scene until at least the end of the week, Mr Thornton said.
"Structural reinforcement work will continue to create an environment where we are comfortable forensic teams can work safely in their efforts to determine the cause of the fire.
"While this is going on, the painstaking work around identifying the victims and completing the post-mortem examinations is still underway in Auckland."
Those involved in the operation were aware of the need for thoroughness in what they were doing and were focused on the fact they were working on the behalf of three families struck down by tragedy who were awaiting the return of their loved ones, Mr Thornton said.