Washington (CNN) Federal prosecutors in a new court filing Thursday allege that longtime Donald Trump associate Roger Stone has violated his gag order in his criminal case with recent social media posts.

"In the past several days, Stone posted statements on social media about this case and the special counsel's investigation and appears to have specifically targeted those posts at major media outlets," prosecutors said in a court filing Thursday.

"On or about June 18 and 19, 2019, the defendant posted to Instagram and Facebook, commenting about this case and inviting news organizations to cover the issue," prosecutors wrote. "This is a violation of the current conditions of release."

Stone was barred by Judge Amy Berman Jackson from making public statements about his case in February, after he posted on Instagram a photo of the judge with crosshairs behind her head. He apologized to Jackson, but she still warned him of severe consequences if he crossed the line of the court's orders.

Jackson has given Stone until June 27 to say how he has not violated his gag order and why she should not change his conditions of release.

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