The 28-year-old shooter, who has been arrested, published a racist manifesto on Twitter before livestreaming his rampage showing him repeatedly shooting at worshipers from close range.
Facebooksaid it was alerted by police to the livestream on its site, and "quickly removed the shooter's Facebook and Instagram accounts and the video".
Facebook is "removing any praise or support for the crime and the shooter or shooters as soon as we're aware", she said.
She said the attacks were shown live on Facebook for 17 minutes before being stopped.
But the livestream lasting 17 minutes was shared repeatedly on YouTube and Twitter, and internet platforms were scrambling to remove videos being reposted of the gruesome scene. "We are working to have any footage removed", the country's police department tweeted.
"Please know we are working vigilantly to remove any violent footage", YouTube tweeted.
"Our hearts are broken over today's awful tragedy in New Zealand", the video portal said in a Twitter posting.
Mia Garlick, of Facebook in New Zealand, said, "We will continue working directly with New Zealand Police as their response and investigation continues".
Alex Zhukov, founder and chief technology officer of LIVE4 developer VideoGorillas, said the LIVE4 services transmitted footage directly to Facebook and his company did not have the ability to review it first.
Earlier past year, YouTube star Logan Paul posted a clip of a dead body hanging from a tree in Japan, prompting the Google-owned video portal to remove his channels from a preferred advertising programme.
At one point, the shooter even paused to give a shout-out to one of YouTube's top personalities, known as PewDiePie, with tens of millions of followers, who has made jokes criticized as anti-Semitic and posted Nazi imagery in his videos.
The seemingly incongruous reference to the Swedish vlogger known for his video game commentaries as well as his racist references was instantly recognizable to many of his 86 million followers.
Damian Collins, the chairman of the Commons culture committee, said it appeared to be a "terror attack designed for social media" and demonstrated why there had to be "statutory regulation of the distribution of content online through social networks". "This is a case where you're giving a platform for hate". "Subreddits that fail to adhere to those site-wide rules will be banned".
Other violent crimes that have been live-streamed include a father in Thailand in 2017 who broadcast himself killing his daughter on Facebook. The latter was up for 24 hours before it was removed. This makes for a tricky balancing act for the company. "We stand here and condemn, absolutely the attack that occurred today by an extremist, right-wing, violent terrorist", Morrison said.
In a statement , Fiji's prime minister Frank Bainimarama also expressed his shock at the shooting and sympathy for the victims. Armed police were deployed at several locations in all cities, unusual in a country that has had low levels of gun violence.
Meanwhile, JLR's retail sales in February 2019 fell 4.1 percent to 38,288 vehicles YoY, dented by weak customer demand in China. The findings were then reported by JLR to the country's Driver and Vehicle Standards Agency (DVSA).
The Spanish giants face Celta Vigo on Saturday and the Real Madrid boss has sparked a discussion over his starting XI. The 1998 World Cup victor inherits a far different dressing room from the when he left in more ways than one.
Tarrant has been remanded in custody until April 5, when he will appear again before the High Court in Christchurch . Hungry for any news, families and friends of the victims gathered at the city's Hagley College, near the hospital.
Though Karpeles claimed to have found 200,000 bitcoins out of the missing cryptoassets, things still fell apart for the exchange. From time to time, Mt.Gox liquidates its cryptocurrency holdings and gives the fiat equivalent to its clients.
Milan chief prosecutor Francesco Greco told Reuters news agency there were "several anomalies" in Ms Fadil's medical records. Later, she said he himself handed her €2,000 ($2,300 at current rates) in cash, telling her: "Don't be offended".
Despite the performance advantage of the German cars, Horner questioned the comfort of the W10's handling. "It will be tough, I think there were only four over takes previous year so it will hard starting where we are".
Condemning the terror strike, Ardern had described it as a "terror attack" and said it "appears to have been well planned". Armed police were deployed at several locations in all cities, unusual in a country where levels of gun violence are low .
The video showed a man driving to the Al Noor mosque, entering it and shooting randomly at people with a semi-automatic rifle. But he said some people frustrated because "they want to get on with their grieving process".
With this in mind it is nearly clear who the 15 will be though one or two players will be unlucky to miss the flight to London. Since Australia's previous one-day series victory, against Pakistan in January 2017, the team has been in a state of flux.
French yellow vests clash with police in Paris
French yellow vest protesters are rioting in a 18th straight weekend of demonstrations against President Emmanuel Macron. He has loosened the state's purse strings to the tune of 10 billion euros ($11.2 billion) to try defuse the protests.
Boeing 737 MAX Software Patch Expected Soon
French authorities are now examining the Ethiopian aircraft to determine why the new plane crashed just minutes after takeoff. However, Aimer said, after a certain point the Ethiopian Airlines plane's fate was sealed.
The Royals Respond to the New Zealand Terror Attack
Bush said forensic officers and pathologists had been working around the clock to gather the evidence from the bodies needed. Christchurch is a city of about 400,000 residents, still recovering from a massive quake in 2011 that killed 187 people.
China loosens investment rules for foreign firms
For some, the law seems to have been rushed without considering the opinions of foreign companies . The new law aims to create a more level playing field between domestic and foreign businesses.