Conspiracy theorist Alex Jones heckled Google CEO Sundar Pichai on Tuesday as the tech executive made his way to a House committee hearing on alleged political bias in Silicon Valley.

Jones followed Pichai down the hallway as Pichai made his way to the House Judiciary Committee hearing, yelling that the CEO had “lied to Congress.”

Jones and former Trump campaign adviser Roger Stone Roger Jason StoneThe agony of justice Our Constitution is under attack by Attorney General William Barr Justice IG investigating Stone sentencing: report MORE were among the last people to enter the committee room for Pichai’s testimony. Both claim that they have been censored by the search engine.

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Some Republicans, including President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE, argue that social media platforms like Facebook and Twitter are biased against conservative voices. Tech executives have disputed those claims, with Pichai saying in his written testimony that he runs Google “without political bias and work to ensure that our products continue to operate that way.”

Stone, who was suspended from Twitter last year after a string of vulgar tweets directed toward reporters, told The Hill on Tuesday that he believes he has been censored by Google as well.

He said he believes the tech companies are engaged in “an effort to limit my ability to defend myself, and that’s rather important to me.”

Stone asserted that during a Google News search for his name, an article about his net worth will appear but not one contesting claims by some Democrats that Stone perjured himself during congressional testimony.

A Google News search for Stone conducted by The Hill features articles about special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE’s interest in Stone as part of the investigation into Russian election interference, as well as Stone’s recent decision to invoke the Fifth Amendment rather than appear before a Senate panel.

Jones, a conspiracy theorist and the founder of Infowars who has been banned from platforms including YouTube, Twitter and Facebook, also attended congressional hearings featuring Facebook and Twitter executives earlier this year.

Jones accused those executives of censoring him as well, and nearly got into a physical altercation with Sen. Marco Rubio Marco Antonio RubioOvernight Defense: Pentagon redirects pandemic funding to defense contractors | US planning for full Afghanistan withdrawal by May | Anti-Trump GOP group puts ads in military papers Democrats step up hardball tactics as Supreme Court fight heats up Press: Notorious RBG vs Notorious GOP MORE (R-Fla.).