Federal prosecutors on Thursday accused U.S. President Donald Trump's former political adviser Roger Stone of violating a court-imposed media gag order by posting comments on social media about special counsel Robert Mueller's investigation.

In a court filing with the U.S. District Court for the District of Columbia, prosecutors accused Stone of trying to "fan the flames," and poison the jury pool ahead of his November trial, and asked the judge to hold a hearing to consider changing his conditions of release.

"Stone's posts appear calculated to generate media coverage of information that is not relevant to this case but that could prejudice potential jurors," they wrote, saying the posts relate to his claims that Russia did not hack Democratic computer servers in the 2016 presidential election.