New Zealand Prime Minister Jacinda Ardern will discuss the radicalisation of the Christchurch Mosques terrorist with Australian counterpart Scott Morrison and YouTube's top executives after unearthing new, damning findings.
On Tuesday, the New Zealand government released the 792-page Royal Commission report into last year's terror attacks.
It found failings by local police and the NZ Security Intelligence Service (NZSIS), and revealed much about Australian terrorist Brenton Tarrant, who was raised in Grafton, NSW.
It also found he was radicalised on the popular Google-owned video-sharing platform YouTube.
Get in front of tomorrow's news for FREE
Journalism for the curious Australian across politics, business, culture and opinion.
READ NOWMs Ardern said she would seek out company leaders to discuss its role in the terrorist's pathway to mass murder.
"What particularly stood out was the statement that the terrorist made that he was 'not a frequent commentator on extreme right-wing sites and YouTube was a significant source of information and inspiration'," she said.
"This is a point I plan to make directly to the leadership of YouTube."
The terrorist made donations to far-right organisations and also frequented an extremist Facebook group called 'The Lads Society'.
The report lists posts made by the terrorist to that group, including complaints over Muslim immigration and threats of violence towards local immigrants.
In January 2019, Tarrant was visited by his Australian-based mother in New Zealand.
She would later tell the Australian Federal Police she was "petrified" by his mental health and racism.
The Royal Commission gives one example of him refusing to eat at a cafe run by migrants, saying he "wanted his money going to white New Zealanders", and was likely to move to Ukraine.
His mother pleaded with him to return to Australia.
But he never responded, carrying out his atrocity 10 weeks later.
The report also says the terrorist considered targets in Australia and elsewhere in New Zealand.
He abandoned a plan to attack a Dunedin festival during the Islamic festival of Eid, settling on Christchurch as he was running out of money.
The report's scope is aimed at NZ state services - including police and intelligence agencies - but Ms Ardern said she would discuss "any elements of the report that may be helpful" with Mr Morrison.
"I have no doubt our agencies will do the same as well."
Commissioners interviewed the Grafton-raised man, who is serving a lifetime sentence for the terror attack, as part of the 18-month investigation.
The report states the terrorist was "limited and on occasion non-existent" in his responses, and in some instances, answers to questions were not believed.
"That said, much of what he said was credible ... it provided insights into his activities and thinking," it read.
The report states that Tarrant expressed racist ideas from an early age, which first manifested as anti-Semitic and anti-Aboriginal comments at school.
He had few childhood or adult friends and did not work for seven years leading up to the terror act, financing travel abroad and to NZ using a pay-out from his father's work-related exposure to asbestos.
From 2014 to 2017 he embarked on a worldwide tour, taking in southeast Asia, North Korea, central Asia and Europe, finishing up in Ethiopia.
The Royal Commission finds that the terrorist's mobilisation to violence occurred in 2017, and that prior to this, he "travelled widely because he could and had nothing better to do".