The request also comes after President Trump accused the juror of harboring "significant bias" following reports that her social media activity contained posts that were critical of Trump.

"Now it looks like the fore person in the jury, in the Roger Stone case, had significant bias. Add that to everything else, and this is not looking good for the "Justice" Department. @foxandfriends @FoxNews," Trump tweeted Thursday.

Stone's attorneys would not reveal the contents of the motion, which was filed under seal to protect sensitive information, saying only that an un-redacted version will be submitted later for public filing.

However, a day earlier they indicated they were looking into the newly surfaced social media activity of jury foreperson Tomeka Hart.

"Mr. Stone and his defense team are diligently reviewing the newly reported information to determine any appropriate next steps," said attorney Grant Smith, who did not refer to the juror by name.