New Zealand Prime Minister Jacinda Ardern has said she would announce new gun laws within days, after a lone gunman killed 50 people at two mosques in the city of Christchurch.

Australian Brenton Tarrant, 28, a suspected white supremacist, was charged with murder on Saturday.

Tarrant was remanded without a plea and is due back in court on 5 April where police said he was likely to face more charges.

"Within ten days of this horrific act of terrorism we will have announced reforms which will, I believe, make our community safer," Ms Ardern said at news conference after her cabinet reached in principle decisions on gun reform laws in the wake of New Zealand's worst ever mass shooting.

In addition to the 50 killed, dozens were wounded at two mosques in the South Island city during Friday prayers.

Gun City owner David Tipple said the alleged gunman legally bought four weapons and ammunition online from the store between December 2017 and March 2018, but it did not sell him the high-powered weapon used in the massacre.

"The MSSA, military-style automatic, reportedly used by the alleged gunman was not purchased from Gun City. Gun City did not sell him an MSSA, only A-category firearms," Tipple told a news conference in Christchurch.

Under New Zealand gun laws, A-category weapons can be semi-automatic but limited to seven shots.

Live-streamed video of a gunman in one mosque showed a semi-automatic weapon with a large magazine round.

Tipple said he supported Ms Ardern's move to reform gun laws as the Christchurch shootings had raised legitimate concerns.

Ms Ardern did not detail the new gun laws, but has said she supports a ban on automatic weapons following the Christchurch shootings.


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Australia introduced some of the world's toughest gun laws after its worst mass killing, the 1996 Port Arthur massacre in which a lone gunman killed 35 people using a semi-automatic AR-15 - the same weapon used in the Christchurch massacre.

Australia banned semi-automatic weapons, launched a national gun amnesty in which tens of thousands of guns were handed in, and made it much tougher to own firearms.

Ms Ardern encouraged gun owners who were thinking of surrendering their weapons to do so.

"The clear lesson from history around the world is that to make our community safer, the time to act is now," she said.

"I strongly believe that the vast majority of gun owners in New Zealand will agree with the sentiment that change needs to occur."

New Zealand's top online marketplace, Trade Me Group, said it was halting the sale of semi-automatic weapons in the wake of Friday's attack.

New Zealand, a country of only five million people, has an estimated 1.5 million firearms.

A Radio New Zealand report, based on police data secured through an Official Information Act request, said more than 99% of people who applied for a firearms licence in 2017 were successful.

A New Zealand standard A-category firearm licence is issued after a police and background check.

Only firearm owners are licensed, not weapons, so there is no monitoring of how many weapons a person may possess.

Violent crime is rare in New Zealand and police do not usually carry guns.

Before Friday, New Zealand's worst mass shooting was in 1990 when a man killed 13 men, women and children in a 24-hour rampage in the seaside village of Aramoana.

He was killed by police.

Ms Ardern said an inquiry will be held into what authorities knew or should have known about Tarrant and the events leading up to the massacre, to see whether the attack could have been prevented.

There were 250 detectives and specialists across the country working on the investigation, said police.

Ms Ardern was the first signatory of a national condolence book that she opened in the capital Wellington today. A book of condolence was also opened in Dublin.

"On behalf of all New Zealanders, we grieve together. We are one. They are us," she wrote.

Frustration was building among the families of victims asunder Islam it is custom to conduct burials within 24 hours, but bodies will not be released until post mortems are carried out.

The burial process, which usually involves washing with three kinds of water, salving wounds and scrubbing skin, would be complicated, volunteers in Christchurch said.

The two mosques involved in the shootings have been closed since the massacre, but are expected to reopen by Friday prayers after cleansing blessings were carried out.

Muslim leaders conveyed messages of love, compassion and appreciation for the community support they had received as hundreds of people visited the scenes to pray, sing and offer condolences.

Christchurch teen charged with distributing mosque shooting livestream

Meanwhile, an 18-year-old has appeared in a New Zealand court charged with distributing the livestream video of the deadly attacks.

The teenager, whose name was suppressed by the judge, was also charged with publishing a photograph of the mosque with the message "target acquired", and for inciting violence.

He faces a maximum of 14 years in prison for each charge, prosecutors said.

A judge did not grant him bail and he is due back in court on 8 April.

Investigators had said that the teenager was so far not believed to be directly involved in his attacks.

District Court Judge Stephen O'Driscoll added that details related to the charges were also to be suppressed.