"Inevitably, this is such a small community, so these people are going to be people who are familiar to us, even if we don't know them directly", he says.
The man has been charged with murder.
A friend of Wasseim's, Carolyne Phillips, who was at the hospital with him, said he had undergone surgery for a perforated bowel, an injury to his pelvis and to get shrapnel and bone out of his hip socket.
Forty-one people were killed at the Al Noor mosque.
Two other people have been arrested in connection with the terror attack, and they remain in custody as police conduct an ongoing investigation as to their possible involvement.
The two-year-old boy was reported to be in stable condition, as was the 13-year-old.
Muslim community members have raised concerns that the time taken to remove the bodies from the mosques would comprise the burial process.
At least one Palestinian died, Palestine's ambassador to Australia and New Zealand said in a statement. We have to be absolutely clear on cause of death and confirm their identity before that can happen. But we are so aware of the cultural and religious needs. "So we are doing that as quickly and sensitively as possible". However, families have not been given any indication from police as to when bodies will be released to them, and their unease is mounting.
"As of last night, we were able to take all of the victims from both of those scenes and in doing so we have located a victim", he said. Helicopters have been hovering overhead in Christchurch since, while heavily-armed officers patrol streets.
Tarrant, handcuffed and wearing a white prison suit, stood silently in the Christchurch District Court where he was remanded without a plea.
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.
Officials in New Zealand have not yet released the names of those killed or wounded, but Prime Minister Jacinda Ardern said on Friday that many of those "directly affected by this shooting may be migrants to New Zealand" or even refugees.
"Across all religions, our houses of worship are a source of refuge, of prayer, and of love; to see such a heinous and hate-filled act occur in what should be places of peace is the darkest of evils".
Officers arrested two others following the attacks and are now working to establish whether they had any involvement in the terror attacks against the Muslim community in New Zealand.
"I can tell you one thing right now, our gun laws will change", Ardern told reporters, saying a ban on semi-automatic weapons would be considered.
Tarrant, described by Australia's Prime Minister Scott Morrison as an "extremist, right-wing, violent terrorist", expressed admiration for other violent white nationalists and his intention to "create an atmosphere of fear" and to "incite violence" against Muslims. "I am very sorry to miss your calls and text messages.I am really tired.please pray for my son, me and my daughter.I am just posting this video to show you that I am fully ok", said Wasseim Alsati, who was reportedly shot three times.