Former U.S President Donald Trump is seen on video during the hearing of the U.S. House Select Committee to Investigate the January 6 Attack on the United States Capitol, on Capitol Hill in Washington, U.S., June 9, 2022. REUTERS/Jonathan ErnstFormer U.S President Donald Trump is seen on video during the hearing of the U.S. House Select Committee to Investigate the January 6 Attack on the United States Capitol, on Capitol Hill in Washington, U.S., June 9, 2022. 

A former Fox News political editor who was fired by the cable network last year said Friday that he will testify Monday at the House select committee.

Chris is the political editor at Newsnation. He couldn't say what the testimony was about.

His announcement came the morning after the first public hearing on the Jan. 6, 2021 insurrection, when hundreds of followers of then- President Donald Trump broke through doors and windows to invade the Capitol.

10 a.m. is when the next hearing will take place. There are more hearings after Monday. The hearing was not broadcasted live by Fox News. Tucker Carlson was one of the commentators who dismissed the hearing as propaganda.

While Fox News aired live images from the hearing, the camera focused on the audience and not on the Capitol attack. During the hearing, the committee displayed texts from Hannity to McEnany outlining a plan for Trump.

After the Fox News political desk called Arizona for Biden in November 2020, Stirewalt was criticized by Trump and his supporters. The call stunned the political world and it was confirmed that Trump would lose the 2020 election.

In January 2021, Stirewalt was terminated. Murdoch told The Washington Post that Stirewalt was fired because of the incorrect Arizona call by the Fox decision desk.

Stirewalt didn't mention Fox News after he was fired by Fox.

He wrote that the rebellion on the populist right against the results of the 2020 election was partly cynical, knowing effort by political operators and their hype men in the media to steal an election or at least get rich trying. It was a tragic consequence of the informational malnourishment.

Representatives for Fox News didn't respond to a request for comment.

CNBC contributors contributed to the report.