TESSA BURROWS/AFP/AFP/Getty Images

Residents get emotional as they pay respect by placing flowers for the victims of the mosques attacks in Christchurch on March 16, 2019. - New Zealand's prime minister vowed to toughen the country's gun laws after revealing Saturday that the man accused of murdering 49 people in two mosques legally purchased the arsenal of firearms used in the massacre. Jacinda Ardern said the gunman, 28-year-old Australian Brenton Tarrant, obtained a "Category A" gun licence in November 2017 and began purchasing the five weapons used in Friday's attacks in the southern city of Christchurch the following month. (Photo by Tessa BURROWS / AFP) (Photo credit should read TESSA BURROWS/AFP/Getty Images)

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Police stand outside a mosque in Linwood, Christchurch, New Zealand, Friday, March 15, 2019. Multiple people were killed during shootings at two mosques full of people attending Friday prayers. (AP Photo/Mark Baker)

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A police officer secures the area in front of the Masjid al Noor mosque after a shooting incident in Christchurch on March 15, 2019. - Attacks on two Christchurch mosques left at least 49 dead on March 15, with one gunman -- identified as an Australian extremist -- apparently livestreaming the assault that triggered the lockdown of the New Zealand city. (Photo by Tessa BURROWS / AFP) (Photo credit should read TESSA BURROWS/AFP/Getty Images)

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In the wake of the deadly attack against two mosques in New Zealand, police officers sit in their vehicle out side the Al Aqsa Islamic Society mosque in Philadelphia, ahead of prayers Friday, March 15, 2019. (AP Photo/Matt Rourke)

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