New Zealand Prime Minister Jacinda Ardern said Thursday that the country will ban military-style semiautomatic weapons in an announcement that comes just six days after shootings at two mosques in Christchurch killed 50 people. “Every semiautomatic weapon used in the terrorist attack on Friday will be banned,” Ardern said at a news conference.

A gunman opened fire on the mosques during Friday prayers, killing 50 and injuring dozens more. Ardern said Thursday that the shooter used two legally purchased semiautomatic rifles that were modified with high-capacity magazines, “turning them into military-style semiautomatic weapons.” A suspect in the massacre, a white supremacist extremist, has been arrested. A day after the shootings, Ardern pledged to change New Zealand’s gun laws and said she would announce plans within 10 days. The ban includes military-style assault rifles, high-capacity magazines and tools to modify firearms, and the arms “will be categorized as weapons with an E-class endorsement” until legislation formally passes, according to Ardern. Most people in New Zealand likely do not have a license for that class of firearm, meaning an owner of such weapons would be breaking the law with the new categorization. Once legislation on the ban passes, which is expected, possessing such firearms will result in a $4,000 fine or three years in prison. The ban is also supported by the opposition party in New Zealand, according to its leader.

National will support firearms reforms. We have been clear since this devastating attack that we will work constructively with the Government. https://t.co/vZCVnd2lID — Simon Bridges (@simonjbridges) March 21, 2019