Prosecutor Greg Andres objected to the question before Gates could answer.
Manafort and Gates were the first two individuals indicted in Mueller's investigation into potential collusion between Russian Federation and the Trump campaign.
Check back for updates on this developing story and read Thursday's Arkansas Democrat-Gazette for full details.
She says in another instance, Manafort maintained that there were no mortgages on a separate NY property when there actually were.
Agent Michael Welch said that was the total the former Trump campaign chairman left off his tax returns between 2010 and 2014.
Welch, a 34-year IRS veteran who worked on more than 500 criminal investigations, is an expert witness in the trial.
Prosecutors allege that the Federal Savings Bank lent Manafort money based on fraudulent documents.
Gates ended three days of testimony on Wednesday, after admitting he lied, stole money and cheated on his wife. He is also charged with bank fraud.
Earlier Tuesday, Gates told the court that Manafort would frequently pay for clothing, landscaping and other personal expenses using wire transfers directly from his bank accounts in Cyprus and others in St. Vincent and the Grenadines.
She said Manafort's passport was used to open many of them in USA dollars, euros and British pounds.
Konstantin Kilimnik, a man prosecutors say has ties to Russian intelligence, was also among the beneficial owners of some of the companies. They are now presenting witnesses related to the bank fraud charges against him. Gates was asked about 11 Cypriot accounts, and he testified that they were all owned by Ukrainian businessmen.
Fox News senior judicial analyst Judge Andrew Napolitano is not pleased with how the judge in the Paul Manafort trial has conducted himself.
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Gates acknowledged that he did for two months and that he took first-class flights and stayed in "fancy hotels" around Europe, but said the money came from bonuses rather than illicit gains.
Ellis encouraged both the prosecution and the defense to not try his patience with unnecessary objections or other delays.
He's also had several heated exchanges with the attorneys from special counsel Robert Mueller's office.
There have been exceptions, like when Gates said that he might have also embezzled from the Trump inauguration committee by inflating his expenses, and when he testified about how Manafort reached out to talk about securing a banker who loaned him money tickets to the inauguration and potentially a position in the administration.
The judge in the case, U.S. District Judge T.S. Ellis III, cut Gates off, saying, "this isn't the time for that". When Downing resumed his questioning about what he called Gates' "secret life", Gates testified that he'd "made many mistakes over many years and I regret them". On Tuesday, Downing straight out asked Gates: "After all the lies you've told and fraud you've committed, you expect this jury to believe you?"
"Well, let me be clear: I don't care what the transcript says", Ellis reportedly said.
Manafort, a former Trump campaign chairman, has pleaded not guilty to 18 counts of bank and tax fraud and failing to disclose foreign bank accounts.
"I'm here to tell the truth". Gates and Manafort were not targets of the Federal Bureau of Investigation at the time of the interview.
At the time he worked for Trump, jurors heard, Manafort's business in Ukraine had always been dried up, and his firm didn't have any clients.
Downing asked Gates if he had told the special counsel's office that "you actually engaged in four extramarital affairs?"
A Manafort lawyer has accused the government's star witness of being immersed in "so many lies" that he can't even remember them all.