A leading member of the neo-Nazi group "Action Zealandia" has been discussing terror cell planning with counterparts overseas.

Stuff has obtained a raft of messages and images sent by the neo-Nazi leader, understood to be based in Palmerston North.

Two people affiliated with the group have recently been arrested: 19-year-old Sam Brittenden after a threat was made to worshippers at the Al Noor mosque, and a 27-year-old soldier who has been charged with the unauthorised sharing of military information that prejudiced New Zealand's national security.

The messages show the group continues to organise within encrypted chatrooms, and appears to reveal a willingness to commit crimes.

The messages, provided by anti-fascist activists Paparoa and White Rose Society Australia, show a New Zealand-based person using the pseudonym "Matt" describing the planning behind Action Zealandia — including discussion of the threat made against the Al Noor mosque last week.

The conversations take place in hidden channels on the encrypted messaging app Telegram, and also appear to show communication with supporters of the Sweden-based Nordic Resistance Movement and neo-Nazi terror network Atomwaffen Division.

Stuff understands "Matt" is a Palmerston North-based man. He has not responded to requests for contact, and the Telegram account was deleted after Stuff sought comment.

Action Zealandia has issued a public statement saying it engages in legal activism. The group has routinely ignored requests for comment.

In the messages, the man discusses the group's vandalism of National Party offices and specific details about the arrest of the 27-year-old soldier, who is described as still being paid by the Defence Force and subject to a "no contact order" with "Matt".

The man shares a video of himself, masked and shirtless, raising a Nazi salute and lifting dumbbells accompanied with the message: "I'm f...... amped right now I wanna kill".

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The man discusses recruitment strategy with people who describe themselves as members of Atomwaffen Division.

Five senior members of Atomwaffen Division in the United States have been arrested in recent weeks, reports The Guardian, on various charges including making violent threats. The group has been linked to five murders.

Amid a broader conversation about terror cell planning, "Matt" said it was a good idea to organise various different groups responsible for their own recruitment — "makes it harder to defeat". 

In the messages to Nordic Resistance Movement supporters, the man appears to refer to the March 15 terror accused when saying: "The boys will take you on a pilgrimage route a saint did last year".

He also mentions obtaining firearms on the "black market".

In the past week, the man has shared the threat made against the Al Noor mosque and discussed his communication with Brittenden, who was subsequently arrested and charged with failing to assist with a search warrant.

The group has made public a police document which advises banks to be wary of transaction between neo-Nazi groups and people.

A 19-year-old Wellington woman was on Monday charged with unlawfully possessing the document. Police have said distributing the document is a crime under the Police Act 2008.

A police spokeswoman said police "proactively work to ensure we have an in-depth knowledge of individuals and groups who actions may pose a threat in New Zealand".

A Security Intelligence Service spokesman said the agency "works tirelessly" to gain intelligence on people wishing to cause harm.

"We are well aware that online chatrooms are channels which are used to spread violent ideologies and extremist material," the spokesman said.

Action Zealandia began recruiting for members at the end of July 2019. The neo-Nazi group is part of a wider identitarian movement found in Australia, US and Europe, is fearful of "replacement" and holds views which have motivated both the alleged Christchurch and El Paso mass shooters.

Members have recently stickered their message around the University of Auckland and on the signage outside Nelson MP Nick Smith's office.

Smith told Stuff he had given security footage to the police, who were investigating the vandalism.

"I did not have any specific concerns about my own safety. I did find the presence of Nazi swaztikas deeply offensive."

Smith said he was not expecting police to prosecute over the vandalism, but hoped the complaint would help authorities identify people who might pose a risk to the community.