Roger Stone, a long-time Republican political operative and adviser to President Donald Trump, has been permanently banned from Twitter, it was learned on Saturday.

The social media service barred Stone after he unleashed an expletive-filled tirade on Friday aimed at CNN commentators.

In a tweet addressed to anchor Don Lemon, Stone wrote: ‘There are no credible “fact checks” that clear the Clintons on uranium. Even the people at CNN say you are a buffoon behind your back.’

Stone was referring to the sale of American uranium to a Russian government-backed company during Hillary Clinton’s tenure as secretary of state under President Barack Obama.

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Roger Stone, a long-time Republican political operative and adviser to President Donald Trump, has been permanently banned from Twitter, it was learned on Saturday

The social media service barred Stone after he unleashed an expletive-filled tirade on Friday aimed at CNN commentators

Republicans are alleging that Clinton helped push forward the deal after former President Bill Clinton received $500,000 for a speech from Russian entities involved in the acquisition.

Stone also took aim on Twitter at New York Times columnist Charles Blow, a frequent guest on CNN.

‘You like, you have no [credibility], you fast-talking arrogant fake news piece of s***!’ Stone tweeted.

Stone then went after Lemon once again, tweeting: ‘You come across on TV as a dull-witted arrogant party boy [sic]. You lie constantly and no one who knows you thinks you are bright.’

‘Don Lemon (above) must be confronted, humiliated, mocked and punished. Dumber than dog s***,' Stone tweeted

Stone also took aim on Twitter at New York Times columnist Charles Blow, a frequent guest on CNN

‘Don Lemon must be confronted, humiliated, mocked and punished. Dumber than dog s***.’

‘Stop lying about the Clintons and uranium you ignorant, lying c*******er!!! You fake news you dumb piece of s***.’

Stone also referred to anchor Jake Tapper as ‘fake news a** wipe’.

Stone also referred to anchor Jake Tapper as ‘fake news a** wipe’

‘Jake Tapper must be held accountable for his lies and very severly punished,’ Stone tweeted.

Stone was reacting to the cable network’s report that special counsel Robert Mueller’s investigation into alleged Russian meddling in the 2016 elections had produced its first indictment.

There is no word as to who the indicted figure is, though an arrest could come as soon as Monday.

The Trump campaign and the Russian government have denied that there was any collusion during the election.

Stone himself appeared before the House Intelligence Committee which questioned him over his alleged contacts with figures close to the Russian government.

He has denied any wrongdoing.

A Twitter spokesperson told The Hollywood Reporter that Stone’s use of threats violated its rules.

‘We believe in freedom of expression and in speaking truth to power, but that means little as an underlying philosophy if voices are silenced because people are afraid to speak up,’ the spokesperson said.

Stone has a reputation for using harsh language in his tweets

‘In order to ensure that people feel safe expressing diverse opinions and beliefs, we do not tolerate behavior that crosses the line into abuse, including behavior that harasses, intimidates, or uses fear to silence another user’s voice.’

Stone has a reputation for using harsh language in his tweets.

He once predicted Senator John McCain would ‘burn in hell for eternity’ after the Arizona Republican criticized Trump for pardoning Sheriff Joe Arpaio.

When Stone was threatened with a libel suit on Twitter, he responded: ‘Would enjoy crushing u in court and forcing you to eat s*** - you stupid ignorant ugly b****.'