Among the wounded, two were in critical condition, including a four-year-old child, said Police Commissioner Mike Bush.
The statement added that a range of activities must be completed before names can be released publicly, "this includes next of kin notifications, which, in many cases, will have worldwide aspects to them".
Ardern said the suspect was a licensed gun owner who bought the five guns used in the crimes legally.
Ardern said: "Hagley Park, very much the focus on them was being able to access their loved ones".
Two other armed suspects were taken into custody Friday while police tried to determine what role, if any, they played in the cold-blooded attack that stunned New Zealand, a country so peaceful that police officers rarely carry guns.
Islamic custom dictates that the deceased should be buried within 24 hours, but authorities said the complex investigation into the massacre of 50 worshippers during Friday prayers made a quick process hard.
His son, Hamza, who is about 16, was missing, and his son Zaid, who is about 13, is in Christchurch Hospital where he underwent a six-hour operation, Akil said.
The Prime Minister said the advice she had received from police indicated that the timing of the email and the information it contained did not provide enough time for response.
The court was closed to the public over safety concerns, however a number of people gathered outside ahead of his appearance, including a man who told reporters his father was one of the victims.
"She came here for the peace.now she is shocked", he said, adding his mother was too afraid to leave her house. She also says New Zealand will make "weekly compensation" available to victims' dependents on an ongoing basis. "There were two semi-automatic weapons and two shotguns".
"I still don't know where he is", she said.
We have all been fortunate to spend time in Christchurch and have felt the warm, open-hearted and generous spirit that is core to its remarkable people.
"We can not be deterred from the work that we need to do on our gun laws", Ardern said.
He has so far been charged with one count of murder, although judge Paul Kellar said it's "reasonable to assume" that more charges will follow, after yesterday's deadly shooting.
Vehicles are prohibited, but people can walk closer to the mosques where the shooting happened on Friday.
Around Christchurch, New Zealand and the world there have been vigils, prayers, memorials and messages of solidarity. "These acts of hate have no place in the diverse and tolerant society for which New Zealand is justly known", the White House statement said.
It is the worst attack of its kind in the country's history and was dubbed its "darkest day" by Prime Minister Jacinda Ardern.
Pence also affirmed US cooperation in ensuring all the perpetrators were brought to justice.