Terrorism (Police Powers) Act 2002 No 115
26U Power to enter premises
(1) If:(a) a preventative detention order is in force in relation to a person, andthe police officer may enter the premises, using such force as is necessary and reasonable in the circumstances and with such assistance from other police officers as is necessary, at any time of the day or night for the purpose of searching the premises for the person or taking the person into custody.(b) a police officer believes on reasonable grounds that the person is on any premises,(2) A police officer must not enter a dwelling house under this section at any time during the period commencing at 9 pm on a day and ending at 6 am on the following day unless the police officer believes on reasonable grounds that:(a) it would not be practicable to take the person into custody, either at the dwelling house or elsewhere, at another time, or(b) it is necessary to do so in order to prevent a terrorist act or the concealment, loss or destruction of evidence of, or relating to, a terrorist act.(3) In this section:dwelling house includes a conveyance, and a room in a hotel, motel, boarding house or club, in which people ordinarily retire for the night.premises includes vehicle.