Pakistan's foreign ministry spokesman says three more Pakistanis have been identified among those killed in the attacks on two mosques in New Zealand.
It is customary in Islam to bury the dead within 24 hours but no bodies have been released because of the investigation, police said.
Images captured by media outlets during that court appearance are being published blurred or pixellated due to an order from the judge who presided over Tarrant's hearing, The New Zealand Herald reports. The officials are also interrogating his European tour and the persons he met during his stay.
The Fijian rugby team also expressed their solidarity with the people of New Zealand after the attacks.
A total of four people were arrested in connection with the incident - one of whom was in possession of a firearm but with the intention of assisting police was released a short time later.More news: Cyclone Idai batters Zimbabwe, at least 24 people dead
Greenhill described "acts of heroism" and "selflessness" by the people attacked on Friday afternoon, including one man who was killed trying to disarm a gunman at the second mosque.
Tarrant has been remanded in custody until April 5, when he will appear again before the High Court in Christchurch.
The majority of victims were migrants or refugees from countries such as Pakistan, India, Malaysia, Indonesia, Turkey, Somalia and Afghanistan.
Before Friday's attack, New Zealand's deadliest shooting in modern history took place in 1990 in the small town of Aramoana, where a gunman killed 13 people following a dispute with a neighbour.
The death toll rose to 50 victims after investigators found another body in the mosque, said New Zealand Police Commissioner Mike Bush.
In a separate tweet on Saturday, Foreign Office Spokesperson Dr Muhammad Faisal had said that Rashid and his son will be buried in Christchurch, adding that arrangements for the burial are in place.More news: French Aviation Watchdog Sends Boeing 737 MAX Crash Data to Ethiopian Officials
Another Palestinian, Abdelfattah Qasem, 59, was the former secretary of the Muslim Association in the city.
The 24/7 cell was to address the developing situation, provide information and updates on the well-being of Pakistani citizens living in New Zealand, the spokesperson had added.
Ardern declined to discuss more details until she'd talked to her Cabinet, the group of top lawmakers that guides policies.
Dozens more were taken to hospital, with about 48 discharged since the shootings. Our thoughts and prayers are with the victims and their families. At least 49 people are confirmed dead, with more than 40 people injured following attacks on two mosques in Christchurch on Friday afternoon.
"I can tell you one thing right now, our gun laws will change", Ardern told reporters on Saturday, saying a ban on semi-automatic weapons would be considered.
"Any loss of life at the hands of extremists regardless of religion, race or colour should be condemned in the strongest of terms".More news: Anger as VW chief executive plays on Nazi slogan at company event