If you feel that the Police have treated you badly you should ask to speak to a lawyer or to the senior sergeant at the station. If you are hurt or ill you should ask to see a doctor straight away. If you have any marks or bruises you should see a doctor and ask them to make a note of them. Get a friend to take a colour photograph of any injuries.

If the Police have threatened you, heavied you or hit you, you should write down (or get someone else to write down) full details as soon as you can before you forget. If the Police do breach your rights tell your lawyer or a duty solicitor or make a police complaint later, rather than argue with the police at the time.

If you want to make a formal complaint you should see YouthLaw Tino Rangatiratanga Taitamariki, a Community Law Centre, a lawyer, Citizens Advice Bureau or other advice agency.
They can help you make a complaint to the Independant Police Complaints Authority.
The Independent Police Conduct Authority will investigate your complaint and let you know of the outcome
You can also make a online complaint via their website
www.ipca.govt.nz
P O Box 5025
Wellington
Free phone 0800 503-728
Fax (04) 499-2053.(Free phone 0800 503 728). PO Box 5025, Wellington.

The police also have a section on their website about police complaints - click here for more info