Fox News, the media company owned by Rupert Murdoch, has been publicly supportive of former President Donald Trump’s claims of election fraud. However, behind the scenes, court documents show that Fox News stars and executives held a different opinion.

The documents, obtained by CNN, reveal that Fox News stars and executives privately expressed disbelief about Trump’s election fraud claims. They discussed how false the claims were and how it was damaging to the network’s reputation. The documents were part of a defamation lawsuit brought by voting technology company Dominion against Fox News.

The New York Times also reported that Fox stars privately expressed disbelief about Trump’s election fraud claims. According to the report, they were concerned that the network was “enabling the president’s false statements” and that it was “undermining the journalistic integrity of the Fox News brand.”

In response to the documents, Fox News released a statement saying that the lawsuit was an attack on the First Amendment and that it would vigorously defend its right to free speech.

The documents underscore the tension between Fox News’ public support of Trump and its private doubts about his election fraud claims. It remains to be seen how this tension will affect the future of the network.