WASHINGTON—Special counsel Robert Mueller’s office accused former Trump campaign chairman Paul Manafort of trying to tamper with potential witnesses in the criminal lobbying case he faces in Washington.
In a court filing late Monday, Mr. Mueller’s office sought to revoke Mr. Manafort’s release before his trial, saying he had tried to communicate with two contacts who had worked with him on a project at issue in the case.
The specific allegations involve Mr. Manafort’s work with “former senior European politicians” who allegedly worked with Mr. Manafort to secretly act as paid lobbyists for Ukraine.
“This is paul,” Mr. Manafort texted an associate who worked with the European group, after the related charges were filed against him in February, Mr. Mueller’s prosecutors wrote.
“We should talk. I have made clear that they worked in Europe,” Mr. Manafort wrote again to the person several days later, Mr. Mueller’s office said.
That contact violated the conditions the court laid out for Mr. Manafort’s release from jail while his case remains pending, the special counsel prosecutors said as they asked for the judge to hold a hearing on the issue.
A spokesman for Mr. Manafort had no immediate comment.
Mr. Manafort has denied the criminal lobbying allegations and pleaded not guilty to indictments filed by Mr. Mueller’s team in federal courts in Alexandria, Va., and Washington.
Write to Aruna Viswanatha at Aruna.Viswanatha@wsj.com