The conviction was the first for spying in New Zealand’s history. The soldier’s name was suppressed, as was what country he sought to pass secrets to.

The wording of the charge said his actions were “likely to prejudice the security or defence of New Zealand”.

He wasn’t speaking to a foreign agent, but an undercover New Zealand police officer collecting intelligence on alleged right-wing extremist groups, documents supplied by the military court showed.

The soldier came to law enforcement attention as part of an operation that was established after a March 2019 terrorist attack on two mosques in the city of Christchurch, when an Australian white supremacist opened fire on Muslim worshipers, killing 51.

Officers spoke to the man twice about his involvement in a group, court documents showed, and after the government became aware he had expressed a desire to defect, he was contacted by the undercover officer.

When the soldier’s hard drive was searched, investigators found a copy of the Christchurch gunman’s livestreamed video of his massacre and a manifesto document he published online before the killings.

Possession of either without permission is a criminal offence in New Zealand and the soldier, who admitted that charge too, joins several others convicted in New Zealand of having or sharing the terrorist’s banned material.

In a statement read to the court by his lawyer, the man said the two nationalist groups with which he was involved were “no more than groups of friends with similar points of view to my own,” according to Radio New Zealand.

The lawyer, Steve Winter, added that his client denied supporting the Christchurch shooter’s ideology, RNZ reported.

The soldier — who was based at Linton Military Camp near the city of Palmerston North — also pleaded guilty to accessing a military computer system for dishonest purposes.

The amended suite of three charges replaced 17 counts levelled against him earlier in the proceedings.

Each of the three charges he admitted carries a maximum prison term of either seven or 10 years in New Zealand. His sentence was expected to be delivered by a military panel within days after the conviction.

The man had been due to stand trial by court-martial on the charges before he admitted the offences.

His was the first charge in a New Zealand military court for espionage or attempted spying; the last time such a case reached the civilian courts before was in 1975, when a public servant was acquitted on charges alleging he had passed information to Russian agents.

A spokesperson for New Zealand’s military said they would not comment until the proceedings against the soldier finished.