Hawzah News Agency - The wife of a man who was killed in the Christchurch mosque attacks has recalled watching her husband tackle the shooter in the harrowing livestream he posted to Facebook.

Ambreen Naeem couldn't see her husband Naeem Rashid's name on the injured list at the hospital after 51 Muslims were killed in Brenton Tarrant's meticulously-planned gun rampage at two mosques in New Zealand last year.

Naeem ran at Tarrant from a corner of the room, coming to within feet of the gunman before Tarrant swung round his AR-15 and fired four shots at point-blank range.

The victim's brave attempt to tackle the gunman was captured on Tarrant's live-streamed video of the attack.

Appearing on the BBC2 documentary In The Face Of Terror, which airs tonight, Ambreen, who also lost her 21-year-old son Talha in the massacre, said she 'loved her husband more than ever' after seeing the 'bravery on his face'.

'As soon as I saw the video I saw Naeem,' she said. 'He tried to tackle the terrorist; I saw the determination in his eyes and the expression of bravery on his face and I loved him more than I've always loved him.'

The mother first heard of the attacks after a phone call from her sister, and then a friend, who advised 'mustering up the courage' to watch the video after she still hadn't heard from her husband and son.

She recalled: 'When my sister called me she told me, "There's been a shooting in the mosque and a lot of people have died," and she said "Where are Naeem and Talha?"

'I tried to call them but they were not picking up the phone; we went to the hospital, I saw the first injured list, their name wasn't there. I still had hope.