The NEW ZEALAND BILL OF RIGHTS ACT 1990 gives us protection from unreasonable search and seizure (see How to know your rights when arrested).
A search warrant may be issued by a court if there are reasonable grounds for believing that in any building, vehicle or other place there is:
The search warrant should describe the place being searched, the offence involved and the items being searched for.
Generally search warrants apply only to premises and do not give the Police the right to search the people there. (Note, however, that under the MISUSE OF DRUGS ACT 1975 Police have the power to search people while legally conducting a warrant-less search of the premises.)
Unless they have a warrant, the Police generally only have the power to search premises when the occupier permits them to do so. They cannot enter or remain on the premises uninvited. There are, however, exceptions for firearms and drugs (see below).
The Police can enter without a warrant to arrest you if:
They can also enter to prevent an offence if they suspect that an offence likely to cause immediate and serious injury to any person or property is about to be committed.
After you have been arrested the Police can carry out a personal search – that is, they can search your person and your possessions without a warrant. However, even if they have entered your house to arrest you, they still do not have the right to conduct a general search of the premises.
The Police must arrest someone before they have the right to search him or her, unless a suspect consents to a search.
The Police also have certain statutory powers of entry to search for firearms or drugs.
As with searching premises, the Police have the right to search a person if they believe that firearms or drugs are being concealed.
A warrant can be issued authorising a Police officer or a social worker from the Department of Child, Youth and Family Services to search for a child suspected of suffering abuse or harm. These are generally known as "place of safety warrants". If the officer or other person carrying out the search believes that the child has been subjected to abuse or serious harm, he or she may remove the child and place him or her in the custody of Child, Youth and Family Services.
The court can also issue a warrant to remove a child if care and protection proceedings have been started in the Family Court for that child and there are reasonable grounds to believe that the child is suffering abuse or serious harm. The Police can then enter and search for the child.
The Police can enter and search without warrant to remove a child if they believe this is critically necessary to protect the child from injury or death.