The police can search you if you give them permission to search you.

Search and Surveillance Act 2012, s 124

Apart from searching inside your mouth (with your consent), the police can’t do an internal search (or “cavity” search), with or without your consent. Only a doctor can do a cavity search, and only under the strict conditions set out in drug laws (the Misuse of Drugs Act).

There are several situations when police have the power to search you, with or without a search warrant:

Search and Surveillance Act 2012, s 22

• Drugs – if the police have reasonable grounds to believe you have illegal drugs on you

Search and Surveillance Act 2012, ss 18, 27

• Weapons – if the police have reasonable grounds to suspect you’re carrying firearms or offensive weapons.

Search and Surveillance Act 2012, s 85

When the police have arrested you, they have the power to do a “rub-down” search (frisk you). This involves the police officer running or patting their hands over your body, outside or inside your clothing but not inside your underwear. The officer can put their hand into your pockets and require you to lift or rub your hair, and to show them the palms of their hands, the soles of their feet, or inside your mouth.

Search and Surveillance Act 2012, s 88

However, the police can carry out a more thorough search if they have reasonable grounds to believe that you’re carrying, or have on you, evidence relevant to the offence for which you’ve been arrested, or something that could be used to harm any person or to help you escape.

Search and Surveillance Act 2012, s 125

The police also have a separate power to search, by force if necessary, any person taken into custody – that is, when you’re being held at a police station or in a police vehicle or in any place being used for police purposes. This is a thorough search and is usually carried out in the privacy of the police station.

Search and Surveillance Act 2012, s 21

These searches all have to be done in a reasonable way, and you must be provided with reasonable privacy.

New Zealand Bill of Rights Act 1990, s 23

If the police are going to search you under a power granted by an Act, the police officer must first caution you, which means telling you that:

• you have the right to stay silent
• you have the right to talk to a lawyer in private without delay, and that you can get free legal advice from a lawyer under the Police Detention Legal Assistance Scheme
• anything you say can be noted down and used in evidence against you in court.

The police officer must also:

• identify himself or herself to you and, if not in uniform, produce ID
• tell you you’re going to be searched, and why
• tell you the particular statutory power the search is being carried out under, including the name and section number of the relevant Act
• tell you about your rights under the New Zealand Bill of Rights Act 1990.