Police need the public's help to locate a patched senior Black Power member who's wanted in relation to an alleged 2016 murder.

Walter Reid Ngaau, 54, currently has a warrant issued for his arrest in relation to the death of Tribesmen Motorcycle Club member John Henry Harris in Whangarei last October.

Detective Inspector Dene Begbie warns Ngaau is considered dangerous and should not be approached, but his known whereabouts or any sightings should be reported to police immediately.

'This is in relation to Operation Bolt, which is our investigation into the murder of John Henry Harris in October 2016.

'We have been working tirelessly on this investigation since October and have made a number of enquiries to locate Walter. However, these have been unsuccessful."

Ngaau is 175cm tall, of medium build, and has connections to the Whangarei and Auckland areas.

'Dene is also reminding anyone who may be assisting Ngaau to evade police that this is a criminal offence.

'We will be taking this type of behaviour very seriously.”

If you have any information which can assist police locate Walter Reid Ngaau call Detective Sergeant Shane Pilmer on 021 191 5948.

Information can also be provided anonymously via Crimestoppers on 0800 555 111.