Media have gathered outside the courthouse waiting for the appearance of the alleged shooter, Australian Brenton Tarrant.
New Zealand's PM Minister Jacinda Ardern says the suspect travelled around the world and was not a long-term resident in the country.
Ardern told a news conference this morning that the man was an Australian citizen "who travelled sporadically to New Zealand and stayed for varied amount of time."
"I would not describe him as a long-term resident," she said.
The New Zealand PM says the suspect used five guns, including semi-automatic rifles and shotguns, which he obtained legalled. He was in possession of a Category A gun licence, she says.
Ardern said none of the people arrested had a criminal past. They were not on any criminal watchlist in New Zealand or Australia, including 28-year-old Brenton Tarrant we understand is due to face court charged with murder this morning.
Jacinda Ardern has confirmed an Australian will appear in court today charged with murder. It is understood that man is 28-year-old Brenton Tarrant.
"I can tell you one thing right now, our gun laws will change," says New Zealand PM Jacinda Ardern, who addressed the media just a short time ago.
The New Zealand PM has addressed the media this morning and pledged to change gun laws in the wake of the terror attack.
- 49 people were killed in terrorist shootings at two Christchurch mosques on Friday afternoon.
- Officials say 41 people were killed at the Masjid Al Noor mosque on Deans Avenue, before fire broke out at Linwood Masjid six kilometres away, leaving seven more dead. One victim died in hospital.
- Former NSW personal trainer Brenton Tarrant identified himself online as being behind the shooting, and he appears to be the gunman who livestreamed the shooting at Al Noor Mosque in chilling 17-min video via YouTube.
- Four people were initially arrested, including one woman.
- A 28-year-old man is due to face court in New Zealand charged with murder today, but police have not confirmed if it is Brenton Tarrant.
- At least 90 people were hospitalised with a range of injuries, including a critically hurt five-year-old child flown to the Starship Children's Hospital in Auckland.
- The Queen and Donald Trump are among world leaders who have shared messages of support for NZ.
- Vigils around New Zealand are being held around New Zealand as families wait desperately for news of their loved ones.