Christchurch mosque shooter was 'picked on pretty badly' as a child because he ...

The white supremacist terrorist who callously shot and killed 50 people in a disgusting attack on two mosques in Christchurch, New Zealand, was bulled as an overweight child, friends have said.

Brenton Tarrant, 28, used semi-automatic weapons to kill defenceless Muslims as they prayed at Al Noor and Linwood mosques on Friday. He live-streamed the 16-minute-long brutal onslaught on Facebook.

Fifty people have died and dozens more are being treated in hospital after the shootings - with 12 still in a critical condition. 

Tarrant grew up in the north-eastern NSW town of Grafton.

Many of his childhood friends still living in the area have revealed Tarrant was a loner for most of his life.

Tarrant grew up in the north-eastern NSW town of Grafton, and his childhood friends still living there said he was a loner for most of his life. He played for the Grafton Ghosts under 15 rugby league team in 2005 (Tarrant is pictured top left)

Tarrant grew up in the north-eastern NSW town of Grafton, and his childhood friends still living there said he was a loner for most of his life. He played for the Grafton Ghosts under 15 rugby league team in 2005 (Tarrant is pictured top left)

Tarrant was arrested on the sidewalk on Friday after he shot and killed 50 Muslim worshipers

Tarrant was arrested on the sidewalk on Friday after he shot and killed 50 Muslim worshipers

Tarrant (centre) faced court on Saturday, smirking and giving a white supremacist sign as he was charged with one count of murder

Tarrant (centre) faced court on Saturday, smirking and giving a white supremacist sign as he was charged with one count of murder 

Daniel Tuite played for the Grafton Ghosts under-15 rugby league team with Tarrant in 2005.

Mr Tuite said he went out of his way to speak to Tarrant as he was 'picked on pretty badly'.

'Grafton can be a pretty harsh place... so if you're overweight and a bit what some people might call useless on the field, you're going to probably get picked on. That's why he just kept himself to himself,' Mr Tuite told The Australian.  

'Where we're from, we'd never even come in contact with Muslims, really.'

Mr Tuite said Tarrant suffered a knee injury, leading him to spend more time lifting weights at gyms.

'Something just changed and he got really serious about exercise and got himself in shape,' Mr Tuite said. 

Tracey Gray, the owner of Big River Gym in Grafton, said Tarrant worked as a personal trainer at the gym five or six years ago.

'He started coming to my facility as a boy that was finishing school and showed a lot of dedication to his own training. Then he went and did his personal training qualifications,' she told Stuff.

Tarrant's grandmother, Marie Fitzgerald, said Tarrant also spent time 'learning the ins and outs of computers and playing games on computers' during his youth.

Tarrant (pictured as a teen) will never comprehend the impact the alleged attacks have had against his parents in their hometown of Grafton, his cousin said

Tarrant (pictured as a teen) will never comprehend the impact the alleged attacks have had against his parents in their hometown of Grafton, his cousin said

Other relatives, including Tarrant's grandmother Marie Fitzgerald and uncle Terry Fitzgerald (pictured) broke their silence on Sunday

Other relatives, including Tarrant's grandmother Marie Fitzgerald and uncle Terry Fitzgerald (pictured) broke their silence on Sunday

Mrs Fitzgerald said she was stilling coming to grips with what had happened.

'It's just so much of everything to take in that somebody in our family would do anything like this,' the 81-year-old woman told https://twitter.com/9NewsMelb/status/1107176286928068608.

'The media is saying he has planned it for a long time so he is obviously not of sound mind.'

The last time Tarrant returned home to NSW was for his sister's birthday last year.  

Tarrant's cousin Donna Cox said it 'hurts' to be related to the alleged mass-murderer.

The 28-year-old faced court on Saturday, smirking and giving a white supremacist sign as he was charged with one count of murder.

Ms Cox said Tarrant would never comprehend the impact of his actions on his family.

'That he is from... a very respected family, his mum, his dad, were pretty high in the community here,' she told Sunday Night.

'He wasn't raised like that, but I'm not here to defend him. If I could ask him - I'd ask him why. How could you do that?

Tarrant's grandmother, Marie Fitzgerald (pictured), said Tarrant also spent time 'learning the ins and outs of computers and playing games on computers' during his youth

Tarrant's grandmother, Marie Fitzgerald (pictured), said Tarrant also spent time 'learning the ins and outs of computers and playing games on computers' during his youth 

Christchurch mosque shooter Brenton Tarrant grew up in this house in Grafton, New South Wales

Christchurch mosque shooter Brenton Tarrant grew up in this house in Grafton, New South Wales

read more from dailymail.....

PREV Supreme Court poised to reject Trump's claims he is immune from prosecution but ... trends now
NEXT Doctors first 'dismissed' this young girl's cancer symptom before her parents ... trends now