"Police alerted us to a video on Facebook shortly after the livestream commenced and we quickly removed both the shooter's Facebook and Instagram accounts and the video", Facebook said on its Twitter account.
Facebook is "removing any praise or support for the crime and the shooter or shooters as soon as we're aware", she said.
Mia Garlick, of Facebook in New Zealand, said, "We will continue working directly with New Zealand Police as their response and investigation continues".
But hours after the attack copies of the video were still available on Facebook, Twitter and Alphabet Inc's YouTube, as well as Facebook-owned Instagram and WhatsApp.
On Twitter, YouTube stated that it is "working vigilantly to remove any violent footage" on its platform, indicating that the content had spread rapidly online and suggesting social media companies are finding it challenging to rein in.
Politicians in multiple countries said social media companies need to be more vigilant. "There were three in the hallway, at the door leading into the mosque, and people inside the mosque", he said.
Buzzfeed reporter Ryan Mac, for instance, noted that YouTube's algorithm and moderation team flagged the videos as sensitive, but could still be viewed after consenting.
New Zealand police urged people not to share the footage, and many internet users called for tech companies and news sites to take the material down.
"While Google, YouTube, Facebook and Twitter all say that they're cooperating and acting in the best interest of citizens to remove this content, they're actually not because they're allowing these videos to reappear all the time", Lucinda Creighton, a senior adviser at the Counter Extremism Project, an worldwide policy organization told CNN.
With billions of users, Facebook and YouTube are "ungovernable" at this point, said Vaidhyanathan, who called Facebook's livestreaming service a "profoundly stupid idea".
The videos show the gunman driving to one mosque, entering and shooting randomly at people inside.
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.
A Facebook account bearing the same name as the alleged gunman apparently livestreamed the massacre on Facebook, and a manifesto was posted on a Twitter account by the same name as well.
"Social media has certainly shifted global security risks", said Anwita Basu, an analyst at the Economist Intelligence Unit.
Other violent crimes that have been live-streamed include a father in Thailand in 2017 who broadcast himself killing his daughter on Facebook. The shooting begins about six minutes into a 17-minute video reviewed by Reuters. "We stand here and condemn, absolutely the attack that occurred today by an extremist, right-wing, violent terrorist", Morrison said.
Wales last reached second spot during the last Rugby World Cup after stunning England during the pool play. Gatland eulogised about Jones in answer to Davies labelling him as the best player of all time for Wales.
The UK is set to roll out their ban from 2040. "This includes vehicles that are damaging our environment". The company will contact the owners of the affected vehicles to arrange for free-of-charge repairs.
YouTube tweeted about the shooting video , "Our hearts are broken over today's awful tragedy in New Zealand". A spokesperson for Prime Minister Jacinda Ardern said the document did not detail his murderous plans.
There is an added incentive for teams at this World Cup, with seven spots at the Tokyo 2020 Olympics up for grabs. Third-ranked France drew the Dominican Republic, Germany and Jordan as its early opponents.
Real were able to get their ban reduced on appeal to the Court of Arbitration for Sport, an avenue Chelsea will also explore. City have welcomed the UEFA investigation into allegations that the club tried to circumvent financial fair play regulations.
We are gratified that courts all over the world are rejecting Apple's strategy of refusing to pay for the use of our IP. Gaston Kroub, a patent lawyer in NY not involved in the case, said the verdict was clearly a win for Qualcomm.
Interestingly, an image which has shown over the EA PC gaming store clearly depicts Octane as new legend coming with the pass. If nothing else, the battle pass also might include additional credits to earn, allowing you to earn the character faster.
A couple of baskets by Nembhard and buckets from four different Gators led to the team being down 35-25 going into halftime. Nembhard led five Gators in double figures scoring with 20, while forward Keyontae Johnson had 16 points and 10 rebounds.
At about the same time, there was a second shooting at Masjid mosque in Linwood, where seven more were killed. After parking, he took two guns and walked a short distance to the mosque where he opened fire.
Muslim ummah cries for its martyrs in New Zealand
New Zealand has in the past tried to tighten firearm laws, but a strong gun lobby and culture of hunting has stymied such efforts. Vehicles are prohibited, but people can walk closer to the mosques where the shooting happened on Friday.
49 dead in New Zealand mosque shootings
Brenton Tarrant posted a 73-page manifesto on twitter before he started to kill people, he described them as a terrorist attack. In a statement he said: "Our hearts go out to the people of New Zealand following the news of this bad act in Christchurch".