"As I observed at this morning's hearing, that is a usual and regular step for counsel to take at this point in the proceeding," said Judge Mander.

Media had reported that Tarrant wished to represent himself and legal experts have said he may try to use the hearings as a platform to present his ideology and beliefs.

"If he has lawyers, he will be speaking a lot less in court," said Graeme Edgeler, a Wellington-based barrister and legal commentator. "He can still give evidence...that's possible, but if he's represented by lawyers and it goes to trial he won't be asking questions of people."

Although journalists were able to attend and take notes, coverage of the hearing was restricted, with media only allowed to publish pixellated images of Tarrant that obscure his face. The judge also suppressed the names of people he was alleged to have attempted to murder.

'ALL HUMANS'

Prime Minister Jacinda Ardern labelled the massacre an act of terrorism and quickly introduced tough new firearm laws which banned semi-automatic weapons.

Muslims worldwide have praised New Zealand's response to the massacre, with many singling out Ardern's gesture of wearing a headscarf to meet victims' families and urging the country to unite with the call: "We are one."

Thousands of visitors to the reopened Al Noor mosque, where 42 people were killed, have offered condolences and sought to learn more about Islam, said Israfil Hossain, who recites the daily call to prayer there.

"They are coming from far just to say sorry ... although they never did anything to us," said Hossain, 26.

On Thursday, a group of Carmelite nuns stood for the first time inside a mosque, holding back tears as they talked with worshippers about the two faiths.

"Everybody has their own problems and they have their own ideas about religions, and that's fine, and we should all have that, we're all different," said one nun, Sister Dorothea.

"But we're all humans and that's the most important thing, our humanity."