ROUGH CUT (NO REPORTER NARRATION) All but one member of New Zealand's parliament voted on Wednesday to change gun laws, less than a month after deadly shooting attacks on two mosques in Christchurch that killed 50 people.

The gun reform bill, which passed 119-1 after its final reading in parliament, must now receive royal assent from the governor general before it becomes law.

New Zealand Prime Minister Jacinda Ardern spoke to the House of Representatives and said she "could not fathom how weapons that could cause such destruction and large-scale death could have been obtained legally" in New Zealand.

"We are ultimately here because 50 people died and they do not have a voice.

We in this House are their voice and today, Mr. Speaker, we have used that voice wisely," she added.

Brenton Tarrant, 28, a suspected white supremacist, was charged with 50 murder charges after the attack on two mosques on March 15, and will next appear in court in June.