The primary suspect, identified as Brenton Harrison Tarrant, a 28-year-old Australian has been charged with murder.
He appeared before a New Zealand district court judge. His hands were handcuffed and he was wearing white prison attire.
Tarrant was remanded without plea until his next appearance in the High Court on April.
In a Medical update, Christchurch Hospital said they were treating 39 patients. Eleven of them are in the intensive care unit.
Meanwhile, Forensics teams and officials were at work behind the security cordon outside of the mosque attack sites in New Zealand as hearses came and went, moving the bodies of people who were gunned down.
There was a constant stream of people came to lay flowers and notes and pray for the 49 who were killed. Prime Minister Arden has said that New Zealand will look at changing gun laws.
Australian Prime Minister Scott Morrison has called for the cycle of hatred and intolerance to be broken.
UNSC HOLDS MINUTE'S SILENCE
The United Nations Security Council observed a moment of silence in tribute to the victims of the attacks on two New Zealand mosques.
Meanwhile, the UN Secretary-General Antonio Guterres has urged the international community to "stand united against anti-Muslim hatred" and all forms of bigotry and terror following the New Zealand shootings.
PM MODI EXPRESSES HIS DEEP SHOCK
Prime Minister Narendra Modi has expressed his deep shock and sadness at the loss of scores of innocent lives in the heinous terrorist attack at the places of worship in Christchurch.
In a letter addressed to New Zealand Prime Minister Jacinda Ardern, the prime minister expressed his deepest condolences to the families bereaved in this dastardly attack, offered heartfelt prayers for the speedy recovery of the injured and underscored India's solidarity with the friendly people of New Zealand at this difficult time.
The Prime Minister stressed India's strong condemnation of terrorism in all its forms and manifestations, and of all those who support such acts of violence. He stressed that hatred and violence have no place in diverse and democratic societies.