While conservative Fox News hosts continue to downplay the extent of the deadly attack on the US Capitol on 6 January – and their links to the president who incited it – another part of the Fox media empire appears to have cracked down on a personality alleged to have taken part: the actor and comedian Jay Johnston.

According to a report by the Daily Beast, the Bob’s Burgers cast member has been “blacklisted” by Fox over his reported presence among supporters of Donald Trump who sought to violently overturn the presidential election.

Johnston, 53, has not been charged or convicted of a crime, or even admitted he was at the Capitol on 6 January.

Nonetheless, the Beast cited anonymous sources close to the makers of Bob’s Burgers as saying Johnston was no longer allowed to voice the character Jimmy Pesto Sr on the long-running cartoon sitcom.

Johnston has appeared in 43 episodes of Bob Burger’s since 2011 but has been missing from the 12th season that began in September, the Beast said, adding that his final appearance to date was in a season 11 episode that last aired in May.

Johnston was unavailable for comment, the Beast said, while Fox and Disney, which includes the show on its Disney+ streaming service, declined the chance to do so.

Internet sleuths have identified Johnston as a man seen wearing a camouflage face mask at the Capitol and wanted by the FBI for questioning.

The Beast quoted a tweet identifying Johnston by Cassandra Church, an actor who worked with him on the comedy podcast Harmontown.

“I’m no detective, but I do know Jay,” Church tweeted in March. “He said he was there. And that’s him in the picture. So…”

In a tweet subsequently deleted, Spencer Crittenden, who also featured in Harmontown, wrote that Johnston was “a craven Trump supporter and was there at the time”.

Tim Heidecker, a comedy writer, claimed to have “fully confirmed through reliable sources” that “it’s Jay”, although he too later deleted his messages.

Johnston’s reported treatment by his employer sits in stark contrast to that of Fox News personalities including Sean Hannity and Laura Ingraham who continue to push the false narrative that outside actors were involved in the insurrection.

Both Hannity and Ingraham this week became entangled in the House investigation of the violence on 6 January, when it was revealed that they were among authors of text messages sent to the then White House chief of staff, Mark Meadows, urging him to persuade Trump to call off the mob.