New details emerge on the deadly terror attack in New Zealand

Authorities call the suspect a self-proclaimed racist with a deep hatred for immigrants.
3:24 | 03/16/19

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Transcript for New details emerge on the deadly terror attack in New Zealand
breaking news from New Zealand and the horrific mosque shootings that left at least 50 people dead. That death toll rising tonight. The 28-year-old suspect accused in the killing spree, his face blurred by authorities. Seen on camera there in christchurch courtroom. Law enforcement searching his home, hunting for evidence. This, as new stories of courage and heroism emerge. And why many are now calling this man a hero tonight. People in that nation express deep grief tonight. Paying tribute to victims gunned down in two houses of worship. The prime minister vowing that following the tragedy the country's gun laws will change. ABC's will Carr is there leading us off tonight. Reporter: Tonight, harrowing new details about that hate-filled terror attack on two mosques in New Zealand. Abdul Aziz was praying with his four sons at the Linwood mosque when he heard shots crack through the air. He quickly grabbed the first thing he could find -- an electronic credit card machine. He got the gun out of the car, started shooting at me. Reporter: Aziz says when the suspect dropped one of his guns, he picked it up but the gun was empty. That shotgun I had in my hands, I threw it like an arrow at him. And it burst his window. He just swore to me and just took off. Reporter: Many crediting Aziz tonight for possibly preventing more death and destruction. 36 minutes after getting the first call for help, local police arrested 28-year-old Brenton tarrant, an Australian native. Authorities raiding his home over 200 miles away, using a bomb-disposal robot. Tonight, he's behind bars after appearing in court. His handcuffs shackled to his waist, his face blurred under New Zealand law. But his hate on full display, appearing to flash this symbol often used by white supremacists in front of the judge. You are Brenton Harrison tarrant. Mr. Tarrant, you are remanded without plea. Reporter: Authorities call the suspect a self-proclaimed racist with a deep hatred for immigrants. He was heavily armed with five guns, including semi-automatics, a bulletproof vest, and left ieds behind. Tarrant allegedly opened fire in the Al Noor mosque during a packed prayer service, killing at least 41 men, women, and children in minutes, all while streaming the ghastly attack live online. Authorities say the killer then drove three miles to the Linwood mosque, where the killing continued. At least seven more worshipers were quickly slaughtered. Today, one more dieing in the hospital. Tonight with burials under way, this community that is unaccustomed to any violence now mourning the loss of so many, including this 3-year-old boy. You don't have many mass shootings in New Zealand at all. Nothing at all that I can remember. Hold your loved ones close and just tell them you love them. And will Carr joins us now from outside that first mosque that was attacked. Will, investigators actively searching that area behind you. Reporter: That's right. Invest gators are combing this area. Going inch by inch looking for L L casings. Authorities believe that the gunman targeted New Zealand because it's one of the safest countries in the world. If you can pull it off here you can pull it off anywhere. All right, will, thank you, Next to the breaking developments in a criminal

This transcript has been automatically generated and may not be 100% accurate.

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