Christchurch terror attack: 'Our gun laws will change' - Jacinda Ardern

Prime Minister Jacinda Ardern has vowed to ensure gun laws change following the Christchurch terror attack.

Speaking to media on Saturday morning, she said the Government is committed to changing the laws.

A 28-year-old man has been arrested and charged with murder following the attack. Two others have been arrested, but no charges laid yet.

The 28-year-old held a category A gun licence, which he obtained in late 2017.

"While work is being done as to the chain of events that led to both the holding of this gun licence and the possession of these weapons, I can tell you one thing right now - our gun laws will change," said Ardern.

"There have been attempts to change our laws in 2005, 2012 and after an inquiry in 2017. Now is the time for change."

Forty-nine people were killed in the attack, which took place at the Deans Ave and Linwood Ave mosques in Christchurch on Friday afternoon.

Ms Ardern said more than 40 people are being treated for injuries sustained in the attack and two are in a critical condition.

One of them is four years old - they have been transferred to Starship Hospital. The child is the only person to have been transferred out of Christchurch Hospital so far.

Newshub Nation will be starting at the earlier time of 8am on Saturday to cover the latest events. You can watch it online here or on Three.

If you would like to donate to the official Victim Support fund, go here. Victim Support's number is 0800 842846.