Jacinda Ardern, New Zealand's prime minister, said on Monday gun law reforms would be announced in 10 days, after meeting her cabinet for the first time since the massacre in Christchurch.
The shock of the terror attack, in which 50 people were killed and dozens wounded at two mosques, has led to calls for an immediate tightening of laws to restrict access to some firearms, particularly semi-automatic weapons.
Ms Ardern said on Monday that her cabinet had made in principle decisions around the reform of gun laws following the mass shooting in Christchurch
"I intend to give further details of these decisions to the media and the public before cabinet meets again next Monday," she said at a press conference.
"This ultimately means that within 10 days of this horrific act of terrorism we will have announced reforms which will, I believe, make our community safer."
She said an inquiry would look at the lead up to attack and what might have been done differently.
The owner of a New Zealand gun store said on Monday the man charged with murder in Christchurch's mass shooting had bought firearms and ammunition online from the store, but it did not sell him the high-powered weapon used in the mosque shootings.
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 April 5 where police said he was likely to face more charges.