The judge imposed the maximum available sentence on 29-year-old Australian gunman Brenton Harrison Tarrant, the first time the sentence has been imposed in New Zealand.

Al-Umari is one of more than 60 survivors and family members who this week in court will confront the white supremacist who committed the worst atrocity in New Zealand's modern history, when he slaughtered 51 worshippers at two Christchurch mosques in March 2019.

The shooter pleaded guilty earlier this year to 51 charges of murder, 40 charges of attempted murder and one charge of committing a terrorist act.