Twitter has announced sweeping measures aimed at cracking down on the QAnon conspiracy theory, including banning thousands of accounts.
The social media giant said it would also stop recommending content linked to QAnon and block URLs associated with it from being shared on the platform.
QAnon is a sprawling conspiracy theory whose followers support US President Donald Trump.
Twitter said it hoped the action would help to prevent “offline harm”.
In a statement shared on the platform, Twitter said it would permanently suspend accounts that violate its policies while tweeting about QAnon.
The suspensions will be applied to accounts that are “engaged in violations of our multi-account policy, coordinating abuse around individual victims, or are attempting to evade a previous suspension – something we’ve seen more of in recent weeks,” it said.
The suspensions are expected to impact about 150,000 accounts worldwide. More than 7,000 accounts have been removed in recent weeks for violations, Twitter said.
Followers of QAnon believe “deep-state” traitors are plotting against Donald Trump. The conspiracy theory has jumped from fringe social media sites to mainstream attention.
QAnon supporters have been linked to numerous other false claims that have spread online, including a bizarre conspiracy theory involving a US furniture company and allegations of child trafficking.
The FBI last year issued a warning about “conspiracy theory-driven domestic extremists” and designated QAnon a potential domestic extremist threat.