Platforms including 4chan, 8chan, and LiveLeak hosted footage of the New Zealand mosque attacks that killed 50 people last week.

In response, a number of internet service providers in Australia temporarily blocked sites that hosted the videos.

"We believe it's the right thing to do, out of respect to the victims of this atrocity and their loved ones, to help stop the further sharing of this disturbing video," Vodafone Australia said.

Facebook and Google have also been scrambling to halt the spread of the video over the past few days.

Internet service providers in Australia blocked platforms including 4chan, 8chan, and LiveLeak after the sites were found hosting footage of the New Zealand mosque shootings that killed 50 people last week.

Vodafone Australia, TPG, Telstra, and Optus blocked various combinations of sites including 4chan, 8chan, LiveLeak, Voat, Zero Hedge, and KiwiFarms in the wake of the attacks, Kotaku reported Australian internet users as saying.

The gunman who shot up the Al Noor and Linwood mosques in Christchurch last Friday broadcast live footage of his attack to Facebook. The video was later reposted on multiple platforms, including Facebook and YouTube.

Read more: A New Zealand shooting survivor, who lost his brother in the attack, found out about the death by watching his killer's livestream

—Super Tim Norman Ultimate (@PerfectStormo) March 19, 2019

Vodafone Australia said in a statement that it had "placed temporary blocks on dozens of sites" found to be hosting footage of the shootings.

A spokeswoman for the company confirmed to Business Insider that it will lift blocks on platforms when they remove the footage, and said a number of sites still actively hosting the videos are still blocked.

She declined to name the other blocked sites.

Ambulance staff take a man from outside a mosque in central Christchurch after the attack on Friday. (Mark Baker/AP)

"We have taken this action because we believe it's the right thing to do, out of respect to the victims of this atrocity and their loved ones, to help stop the further sharing of this disturbing video," Vodafone Australia said in a statement.

"We understand users trying to access some of these sites for legitimate purposes may be inconvenienced but we believe an extraordinary response is required in these circumstances."

Read more: Here's what we know about the victims of the mosque mass shootings in New Zealand that killed at least 50 people

People attend the burial ceremony for the victims of the mosque attacks, at the Memorial Park Cemetery in Christchurch on March 20. Jorge Silva/Reuters

Telstra said on Twitter that it had temporarily blocked "a number of" sites, which it will lift when it verifies that the platforms "have removed footage of the attack and who are moderating new uploads."

"These are extreme circumstances," it said, "and we feel this is the right thing to do."

The Australian Associated Press reported that 4chan, 8chan, Voat, Zero Hedge, and Liveleak all failed to load on Vodafone Australia, Telstra, and Optus networks on Wednesday. It's not clear which of those sites remain blocked or have since been unblocked.

Business Insider has contacted TPG, Telstra, and Optus for comment.

At least three internet providers in New Zealand — Spark NZ, Vodafone NZ, and Vocus NZ — also temporarily blocked platforms distributing footage of the attack last weekend, tech news site Bleeping Computer reported.

Mourners pay their respects at a makeshift memorial near the Masjid Al Noor mosque in Christchurch on March 16. AP Photo/Vincent Yu

US tech firms like Facebook and Google, which owns YouTube, scrambled to remove videos of the attack on their platforms last week. Facebook said it deleted 1.5 million videos of the attack from its platform within 24 hours, 1.2 million of which were automatically blocked before they could be uploaded.

The day before the attacks a man uploaded a racist manifesto on 8chan explaining why he would shortly be killing Islamic "invaders." The post was linked to the Facebook page of the suspected shooter, 28-year-old Australian Brenton Tarrant.