A 28-year-old man has been charged over the shootings in the city of Christchurch, according to reports, and will appear in court on Saturday morning local time.
Police also arrested a couple at a roadblock.
It has been widely reported that the suspected gunman in the New Zealand massacre took to social media platforms to live stream his attacks.
Health officials said 48 other people were being treated at Christchurch Hospital for gunshot wounds.
"I'm not privileged to a full breakdown at this point but it is clear that young children have been caught up in this horrific attack", she said regarding victims of the attack. One person was later released.
"I have many friends here".
Mr Nabi said his father, who ran the Afghan Association, was killed as he tried to save another person from the gunman. He did not say whether police believed the same shooter was responsible for both attacks.
In Hamilton, police said they had increased their presence at all area mosques and other places of worship after connecting with leaders in the Islamic community. He said they had disabled one and were in the process of disabling the second.
At Hagley College, just minutes from where 41 people were fatally shot at the Al Noor mosque, families of the victims greeted the prime minister.
In gruesome video footage, which The Post is not publishing, the attacker approaches the entrance to the mosque and raises his weapon.
Friday prayers were offered for the peace and comfort of those who gave their lives and the families affected, the imam said. The country's previous deadliest shooting took place 29 years ago in the small town of Aramoana, where lone gunman David Gray murdered 13 people following a quarrel with a neighbor. He said one was slightly injured. "We got scared, we asked ourselves what was happening", Sapkota said.
He and his co-workers had been working at a building site a short distance from the Al Noor mosque in central Christchurch when the shooting started. Children's screams can be heard in the distance as he returns to his vehicle to get another rifle.
"When innocent people die it does not matter which country, which religion you belong to, which city you belong to, it hurts", he told CP24. The video then cuts out.
"There is more love than hate, so it is important to find the love now", he added.
An unidentified man wrestled a gun from the hands of the man involved in the terror attack in New Zealand and prevented further deaths, according to witnesses.
New Zealand is generally considered to be a welcoming country for migrants and refugees. There were efforts in the late 1990s to ban AR-platform firearms as well as reduce the time to renew a firearms license from 10 years to three years, but the measures didn't go anywhere. Immigrants, she said, ashen-faced, "have chosen to make New Zealand their home, and it is their home".
Many people in the diverse city have ties to the community that stretch back generations.
The New Zealand Red Cross trains volunteer teams that help respond to attacks like this.
Those views were apparent even among the onlookers gathered at Al Noor Mosque.
"We are in the midst of a surge of right-wing terrorism that has been metastasising in plain sight while generating only a muted response from domestic counter-terrorism authorities", he said.
The Pacific Music Awards organisation in New Zealand also expressed its shock and solidarity over the shootings.