Alex Jones, the American conspiracy theorist, has been suspended from Facebook for bullying and hate speech with the pages tied to him and his Infowars website on the verge of being removed from the platform altogether, the social media network said on Friday.

The radio host's personal profile was banned for 30 days after it was found to have uploaded four videos published on pages maintained by Jones and Infowars that went against community standards, Facebook said.

The videos have been removed and Infowars and Jones' pages "are close to being unpublished given recent community standards violations," Facebook said in a statement.

Content removals count as "strikes" against individual pages. Pages maintained by Jones and Infowars have remained active because they have not crossed "a certain threshold of strikes" necessary for them to be unpublished, Facebook said.

YouTube removed four Alex Jones videos earlier this week and said Jones' Infowars website faced permanent removal if his content was given three community strikes within 90 days.

"Our Community Standards make it clear that we prohibit content that encourages physical harm, or attacks someone based on their religious affiliation or gender identity [hate speech]," Facebook said.

"We remove content that violates our standards as soon as we're aware of it."

Infowars did not respond to a request for comment.

Jones has defended the videos on Twitter as being "critical of liberalism."

Since founding Infowars in 1999, Jones has built a vast audience. He has promoted dubious theories such as that the US government staged the 9/11 attacks on New York and Washington.

Jones’ Facebook suspension means that he cannot post on his personal profile or his pages, nor can he message, comment or post anywhere else on Facebook.