The news outlet reports that an affidavit attached to a 2017 search warrant application was unsealed on Wednesday, and it showed that tax returns for a company Manafort and his wife controlled displayed the loan.
According to Reuters, the loan reveals closer links than previously known between Manafort and the Russian oligarch who has ties to the Kremlin.
FBI agents conducted a raid of Manafort's home in July 2017 after their application was granted. The raid reportedly provided Special Counsel Robert MuellerRobert (Bob) MuellerSenate Democrats urge Garland not to fight court order to release Trump obstruction memo Why a special counsel is guaranteed if Biden chooses Yates, Cuomo or Jones as AG Barr taps attorney investigating Russia probe origins as special counsel MORE with key evidence in his investigation into Russian meddling in the 2016 election.
His investigation has included a probe into Manafort's financial relationship with Deripaska. Reuters reports that Deripaska is a metals magnate who is known to have close ties with Russian President Vladimir Putin. Deripaska was sanctioned by the U.S. in April.
In addition, the affidavit that was unsealed displayed that Deripaska had financially supported Manafort's consulting work in Ukraine. The search warrant application also confirmed that Mueller is probing Manafort's role in a 2016 Trump tower meeting with a Russian lawyer.
The development comes a day after a federal judge declined to dismiss the case brought against Manafort. U.S. District Judge T.S. Ellis reportedly found no merit in Manafort's stance that Mueller did not have the power to charge him with a crime.
Manafort was ordered to jail in early June for allegedly violating the terms of his bail agreement by attempting to tamper with witnesses in Mueller's probe.
Among other things, Manafort is being investigated by Mueller for managing a scheme with former business associate Richard Gates to hide funds made from his lobbying activities in Ukraine from U.S. authorities. He did this by disguising payments as loans that were given to him from offshore U.S. entities.