The man in his late 20s has been charged with murder after the fatal mass shootings saw dozens of people killed and many more seriously injured.
A further two suspects have been remanded in custody says New Zealand authorities.
The terrorist attacks occurred on Friday afternoon when a gunman walked into two mosques and opened fire on the unsuspecting worshippers in Christchurch, New Zealand.
New Zealand’s Prime Minister, Jacinda Arden said the gunman planned to continue with his attack if he hadn’t been stopped.
The attack is the deadliest mass killing in New Zealand since 1943.
New Zealand police announced 50 people were killed along with a further 50 people seriously injured after the terrifying 36-minute ordeal.
Footage of the first shooting, where 41 people died, occurred in Al Noor Mosque in central Christchurch and was live streamed on social media for 17 minutes before the footage was abruptly cut off.
The second hit, a smaller mosque in the suburb of Linwood ended with seven people killed.
The suspect, Brenton Harrison Tarrant, 28, appeared in court on Saturday charged with one count of murder.
The self-proclaimed white supremacist showed no remorse during the court proceedings- going as far as to flash a white power sign in the attempt of a dark joke to online extremists.
Ardern said more charges will be placed.
Tarrant will remain in custody and appear back in court on April 5th.
Police around the world have upped their presence and surveillance in response to the shootings.