They include, among other things, "the idea that European civilisation is threatened by immigration in general and by Muslim immigration in particular, and that it is legitimate for some people to resort to extreme violence to stop it", he told AFP.
Police Commissioner Mike Bush said 49 people had been killed in total.
"We have to be absolutely clear on the cause of death and confirm their identity before that can happen", he said. "It unites us against extremism, hatred and terrorism, which knows no religion". "So we are doing that as quickly and as sensitively as possible".
London's Mayor Sadiq Khan and Britain's top counter-terror officer said the police presence would be stepped up as people went to Friday prayers.
One man was arrested and charged with murder, and two other armed suspects were taken into custody while police tried to determine what role they played.More news: French Aviation Watchdog Sends Boeing 737 MAX Crash Data to Ethiopian Officials
The European Commission said: "This senseless act of brutality on innocent people in their place of worship could not be more opposite to the values and the culture of peace and unity that the European Union shares with New Zealand".
Christchurch, sometimes called the Garden City, has been rebuilding since an natural disaster in 2011 killed 185 people and destroyed many downtown buildings. And a young child who was in a children's hospital in Auckland was also listed as critical.
Members of the Bangladesh national cricket team, in Christchurch for a match against New Zealand, had arrived for Friday prayers as the shooting started but were not hurt. About two dozen men received instructions on their duties Sunday morning, which included Muslim burial customs. "We are all here to help them in washing the body, putting them in the grave". "Additional patients with gunshot wounds presented to other health facilities in the community", the health authority said.
"The family understands that it's a crime scene".
Still, it was hard, he said, because the grieving process wouldn't really begin until he could bury his cousin.More news: Qualcomm scores $31 mn win in patent battle war with Apple
At least 49 people were gunned down dead in two mosques in New Zealand. We want to keep our journalism open and accessible and be able to keep providing you with news and analysis from the frontlines of Israel, the Middle East and the Jewish World. "50 hearts for 50 lives".
In the video that was apparently livestreamed, the gunman spends more than two minutes inside the mosque spraying terrified worshippers with bullets again and again, sometimes firing at people he has already cut down. Facebook, Twitter and Google scrambled to take down the video, which was widely available on social media for hours after the bloodbath. Part of the attack which took place at Al Noor Mosque was broadcast live.
Gym manager Tracey Gray confirmed the man who filmed the attack and streamed it online was Tarrant.
"I can't put into words how I'm feeling right now".
"Far too often, Muslims suffer unimaginable loss and pain in the places where they should feel safest", Trudeau said in a statement. Neighboring Australia has virtually banned semi-automatic rifles from private ownership since a lone gunman killed 35 people with assault rifles in 1996.More news: Apex Legends: Battle Pass Is Not Coming Today - Respawn Says
The suspect who claimed responsibility for the shooting stated he came to New Zealand with the specific intention to plan and train for the attack.