Fabrizio is a valuable asset for Mueller's team, as he is one of the few people close to Manafort with inside knowledge about the Trump campaign's inner-workings and could shed light on the work Manafort did in Eastern Europe for Russian oligarchs.
Trump has repeatedly denied any collusion with Russian Federation and criticized Mueller's ongoing probe as a "witch hunt".
The information was accidentally revealed in a defense filing Tuesday and was meant to be redacted.
U.S. District Court Judge Amy Berman Jackson ordered Mueller to respond by January 14 with "factual and evidentiary basis" for why it is accusing Manafort of lying during his cooperation. He also has a March 5 sentencing before Jackson in Washington for his guilty plea on conspiracy against the US and conspiracy to obstruct justice.
In September, he agreed to plead guilty and cooperate with Mueller to avoid another trial in Washington federal court. "Nothing about it", he said in response to a reporter's question.
The Manafort attorneys told the judge that their client's missteps came at a time when he'd been held for months in solitary confinement in an Alexandria, Va., jail, a stay that they said had "taken a toll on his physical and mental health" and led to "depression and anxiety". Mr. Manafort has not worked with SCM since then.
The latest allegations further detail how Manafort's work on the campaign intersected with his past global work with Kilimnik.
On Tuesday, portions of a court filing by lawyers for convicted former Trump campaign head Paul Manafort were inadvertently made public. Manafort dangled the briefings as he was mired in a dispute with Deripaska over a multimillion-dollar deal involving a Ukrainian cable company. Russian Federation and Ukraine have been locked in a conflict since 2014 over Russia's annexation of Crimea.
Russia, which illegally annexed Crimea from Ukraine in 2014, wanted a peace plan so the U.S. would remove the sanctions it imposed because of the invasion. President Trump denies any campaign collusion with Russian Federation.
Manafort earned millions from his Ukrainian political work over several years, which included wire transfers from Akhmetov and Lyovochkin through offshore bank accounts, prosecutors said at trial.
The filing says that a May 26, 2018, text message exchange with Manafort involved an unidentified "third-party" who was asking permission to name-drop Manafort if the person met with Trump. But there has been no indication that Trump knew about Manafort's activities or that the recipients used the data to help Trump win the election.