President Donald Trump called it “so weird” to see Sen. Bernie Sanders (I-Vt.) in a town hall on Fox News, and even appeared to push a conspiracy theory about it.

Bret Baier and Martha MacCallum moderated an hour-long town hall with Sanders, a 2020 Democratic presidential candidate, for the cable news network on Monday. Trump tweeted about it several times Tuesday.

“So weird to watch Crazy Bernie on @FoxNews. Not surprisingly, @BretBaier and the ‘audience’ was so smiley and nice. Very strange, and now we have @donnabrazile?” Trump wrote on Twitter.

Trump then suggested his favorite TV channel censored his MAGA (Make America Great Again) supporters and “stuffing” the event with Sanders supporters.

“Many Trump Fans & Signs were outside of the @FoxNews Studio last night in the now thriving (Thank you President Trump) Bethlehem, Pennsylvania, for the interview with Crazy Bernie Sanders. Big complaints about not being let in-stuffed with Bernie supporters. What’s with @FoxNews?” the president tweeted.

He did not elaborate on his claims or provide evidence. Photos showed protesters outside the event holding “Trump 2020” and “Make America Great Again” signs, but it’s unclear if any tried to enter the town hall.

Protesters demonstrate in support of President Donald Trump near a Fox News town-hall style event with Sen. Bernie Sanders Monday April 15, 2019 in Bethlehem, Pa. (AP Photo/Matt Rourke)AP

The Washington Post noted that one viral moment from the town hall showed Baier asking town hall attendees if they would be willing to give up private health insurance from employers to move to a government-run health system that resembled Sanders’s Medicare-for-all proposal. Many in the audience cheered.

Trump also commented on Sanders’ tax returns (“...made a fortune off of Trump, but so did everyone else - and that’s a good thing, not a bad thing!”) and predicted “Crazy Bernie Sanders” and “Sleepy Joe Biden” will be the two final candidates vying for the Democratic nomination next year.

“I look forward to facing whoever it may be. May God Rest Their Soul!” Trump tweeted.

On Wednesday morning, Trump further suggested he was upset with Fox News hosting a rival candidate by tweeting support of OANN, the conservative One America News Network.

“Thanks for watching Mr. President - we’d love to have you on a town hall soon - or even an interview on @SpecialReport - it’s been awhile. We cover all sides,” Baier responded to Trump on Twitter.

So weird to watch Crazy Bernie on @FoxNews. Not surprisingly, @BretBaier and the “audience” was so smiley and nice. Very strange, and now we have @donnabrazile? — Donald J. Trump (@realDonaldTrump) April 16, 2019

Many Trump Fans & Signs were outside of the @FoxNews Studio last night in the now thriving (Thank you President Trump) Bethlehem, Pennsylvania, for the interview with Crazy Bernie Sanders. Big complaints about not being let in-stuffed with Bernie supporters. What’s with @FoxNews? — Donald J. Trump (@realDonaldTrump) April 17, 2019

Bernie Sanders and wife should pay the Pre-Trump Taxes on their almost $600,000 in income. He is always complaining about these big TAX CUTS, except when it benefits him. They made a fortune off of Trump, but so did everyone else - and that’s a good thing, not a bad thing! — Donald J. Trump (@realDonaldTrump) April 17, 2019

I believe it will be Crazy Bernie Sanders vs. Sleepy Joe Biden as the two finalists to run against maybe the best Economy in the history of our Country (and MANY other great things)! I look forward to facing whoever it may be. May God Rest Their Soul! — Donald J. Trump (@realDonaldTrump) April 17, 2019