Prosecutors had previously complained to the judge about Manafort's behavior as he awaits trial.
Paul Manafort, who is facing money laundering and tax evasion charges among others, was the first former Trump campaign aide to be jailed in Special Counsel Robert Mueller's probe of alleged Russian meddling in the 2016 US presidential election since May 2017.
USA TODAY is providing live coverage outside the federal courthouse where Manafort is testifying beginning at 10:00 am ET in the player above. Proceedings before U.S. District Judge Amy Berman Jackson of the District of Columbia were ongoing.
'This is not middle school.
Manafort was arraigned Friday on the obstruction counts and is set for trial in Washington in September over the allegations of secret lobbying. Prosecutors say Manafort directed the group's work and secretly funneled more than $2 million to it to take positions favourable to Ukraine including by lobbying in the US without disclosing that they were being paid to favourably represent the country.
Kilimnik, whom Mueller´s office says has ties to Russian intelligence, could not be reached for comment.
Manafort was accused of sending WhatsApp messages in an effort to influence witness testimony.
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Andres replied that "it's inconceivable that he (Manafort) doesn't know that they're potential witnesses".
Prosecutors argued on Friday that Manafort could continue to engage in alleged criminal activity if he is not jailed.
The Manafort case focuses on his work between 2004 and 2014 in Ukraine for pro-Russia politicians including former Ukrainian president Viktor Yanukovych.
Manafort's attorneys have accused prosecutors of conjuring a "sinister plot" out of "innocuous" contacts.
Berman said that she had no choice but to revoke his bail.
None of the charges against them relate to alleged collusion with Russian Federation. Around that same time, Manafort's co-defendant and longtime business associate, Rick Gates, pleaded guilty and agreed to co-operate with prosecutors.
Manafort is awaiting trial scheduled to start later this year after having been charged in October with bank fraud, conspiracy to launder money, and other crimes.
The court filing said the Federal Bureau of Investigation had documents, statements, and telephone records showing that he attempted to communicate with the potential witnesses in February in violation of the terms of his release on bail. The person believed from his experience that the Hapsburg group lobbied in the United States and knew that Manafort knew that as well, the agent wrote. The group included one unidentified former European chancellor.