"I intend to give further details of these decisions to the media and the public before cabinet meets again next Monday", Jacinda Ardern said.
Ardern said an inquiry will be held into what intelligence, police, customs and immigration knew or should have known about Tarrant and the events leading up to the massacre, to see whether the terrorist attack could have been prevented. Peters, whose New Zealand First party has previously opposed changes, said he backed the prime minister fully. "We detected nothing extraordinary about this licence holder", he told reporters.
The police commissioner Mike Bush said police are certain Tarrant was the only gunman but aren't ruling out that he had support.
As NPR's Matthew Schwartz reported, one focus likely will be on restricting the purchase and modification of semi-automatic weapons such as the one the gunman allegedly used to kill 50 people. "We have taken 72 hours", Ardern said.
His store has been criticized, in the wake of the shootings, for leaving out a roadside advertising billboard that shows a parent helping children with rifle target practice.
Mass shootings and violent crime are rare in New Zealand, a country of almost 5 million people.
Prime Minister Scott Morrison says 55 million Australian dollars ($39 million) in total will be made available to add security video, fencing, lighting and alarms.
A bill already before Senate would, among other things, expand the scope of background checks on those who want to acquire guns here.
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He was arrested in 2016 on a domestic violence charge, which was later dropped in exchange for his undergoing counseling. For the Brown, he started eight games and passed for 1,675 yards with seven touchdowns and seven interceptions.
As reported by The New York Times, current gun purchasing laws in New Zealand require someone to pass a background check, which considers criminal, medical, domestic violence, and mental health history.
Legal experts in New Zealand say 28-year-old Brenton Tarrant may instead face multiple murder charges over Friday's massacre, which left 50 people dead.
Police said the airport in the southern city of Dunedin, had been reopened early on Monday after a suspicious item found on the airfield turned out to be a hoax object.
Reigning Super Rugby champions Canterbury Crusaders, who play in Christchurch, said on Monday they would consider changing their name after criticism that it was historically insensitive.
Several others in New Zealand have also performed the dance in honour of the victims in recent days.
"What did seem apparent to me is he seemed quite clear and lucid, whereas this may seem like very irrational behavior", Mr Peters told the publication.
New Zealand, a country of only 5 million people, has an estimated 1.5 million firearms. Ardern said he "uttered the words "Hello brother, welcome".
Hati Mohemmed Daoud Nabi, 71, opened the door to the Al-Noor mosque.
"We can not simply sit back and accept that these platforms just exist and that what is said on them is not the responsibility of the place where they are published".