in Poway, California.

He said his company has notified 8chan that they would no longer be covered by its services, which includes protection from DDOS attacks. "They have proven themselves to be lawless and that lawlessness has caused multiple tragic deaths," said Prince.

Read more: America's weekend of terror

Activists have decried deadly gun violence in the US, saying more needs to be done to curb access to arms and to quash extremism

'Confronting white supremacy'

The 21-year-old man suspected of killing 20 people at a Walmart in Texas is believed to have posted a patchwork manifesto on 8chan, tying together elements of right-wing extremist conspiracy theories.

The suspect praised the Christchurch shooter in the manifesto and cited "the Hispanic invasion of Texas" as the key motivator behind the attack. The FBI launched anplatforms, such as Telegram and Gab.

"White nationalists have used fringe platforms like 8chan and the messaging app Telegram to call for terror attacks like the one in El Paso and to praise those who commit mass shootings in the name of their ideology as 'saints,'" the SPLC said in a post on Sunday.

Gab, touted as a right-wing alternative to Twitter, was also used by the perpetrator of the 2018 Pittsburgh synagogue shooting, in which 11 people were killed during a baby-naming ceremony. Web hosting company GoDaddy and PayPal, along with other online companies, barred Gab from using their services in the wake of the attack for "explicitly allowing the perpetuation of hate, violence or discriminatory intolerance."

But some critics believe governments should take a more proactive role in stemming