He was remanded without a plea until his next scheduled appearance in the South Island city's High Court on April 5.
Mr Tarrant was arrested in a vehicle, which police said was carrying improvised explosive devices, 36 minutes after they were first called.
Gray's speculation was backed up by a rambling, hate-filled, manifesto Tarrant posted to social media ahead of the Christchurch killings. The camera attached to his head recording the massacre follows the barrel of his weapon, like some macabre video game. 48 people were injured in the terrorist attack that was carried out during Friday prayers at Al Noor Masjid and a smaller mosque in Linwood. No images have emerged from the second mosque.
According to the National Terrorism Threat Advisory System, this would mean authorities have received "credible intelligence that indicates that individuals or groups continue to possess the intent and capability to conduct a terrorist attack in Australia". One man was arrested and charged with murder for what appears to be a carefully planned attack and two other people are in custody.
Nine people from India or of Indian origin have gone missing, the Indian envoy in New Zealand has said.
Roberson said a 4-year-old girl who has been transferred to an Auckland hospital in critical condition and 11 patients who remain in Christchurch are also critically wounded.
In online forums, people discussed Muslim food restrictions as they prepared to drop off meals for those affected. "Hi guys how are you".
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In total the malware was found in 210 seemingly legitimate apps, which have now been pulled from the Google Play store . The top-performing vendors included Avast, Bitdefender, ESET, F-Secure, Kaspersky Lab and McAfee, among others.
The winners of New Zealand's first-class domestic cricket competition, Plunket Shield, has been decided with a round left, in the wake of the terrorist attack at a mosque in Christchurch. I can only imagine now how New Zealanders are feeling. Ardern said some were from Pakistan, Turkey, Saudi Arabia, Bangladesh, Indonesia and Malaysia. "I'm not sure how to deal with this. Forgiving is going to take time", Omar Nabi, whose father Haji Daoud Nabi was gunned down, told reporters outside the Christchurch court. "I say to them again stay strong".
"I hadn't intended for anybody other than the people at Medina Mosque to know about this", Mr Graystone said.
Four New Zealand women hugged each other outside the cordon.
For an Islamic funeral burial is traditionally within 24 hours of death. Tarrant, obtained a "Category A" gun licence in November 2017 and began purchasing the five weapons used in Friday's attacks the following month, she said.
The manifesto was sent to several public figures in New Zealand, including Ardern.
Military-style semi-automatic rifles, banned in neighboring Australia, are permitted in New Zealand but must be registered.
As Ardern revealed deatails about the suspect's weapons and his background, she promised changes to the country's gun laws. "Are there associates in the United States?" WORLD CONDEMNATION Leaders around the world expressed sorrow and disgust at the attacks, with some deploring the demonization of Muslims. But updates were slow to come, and many families were still waiting to hear whether their loved ones were among the victims. "My message was sympathy and love for all Muslim communities", she said she told him.