Prosecutors relied on Gates to provide first-hand support of the accusations against Manafort. U.S. District court Judge T.S. Ellis III presides.
In its cross-examination of Magionos, the defense presented pieces of evidence with Manafort's signature on them, calling into question whether Manafort had actually written his signature on the foreign accounts.
Check back for updates on this developing story and read Thursday's Arkansas Democrat-Gazette for full details. He said there were 15 secret accounts.
An FBI forensic accountant is telling the jury in Paul Manafort's financial fraud trial how she traced millions of dollars of payments for mortgages, home improvements and expensive cars, rugs and clothes back to his hidden foreign bank accounts. He told jurors he embezzled from Manafort by filing false expense reports.
"There were hundreds of these", he said, as prosecutors showed emails in which Manafort requested transfers.
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.
Prosecutors called Morgan Magionos, an Federal Bureau of Investigation forensic accountant, as the next witness to testify.
Konstantin Kilimnik, a man prosecutors say has ties to Russian intelligence, was also among the beneficial owners of some of the companies.
Gates admitted to hiding his own income from the IRS in offshore bank accounts.
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Mr Ali "seemed to be trying to back away or get away from the situation" before he was punched by Mr Stokes, he added. "I was anxious it might be two onto one and I knew one had had a bottle just before this", he told police.
Until the trial for Paul Manafort started, Andrew Weissmann had been one of the most prominent members of the prosecution team.
Ahead of that barrage, Gates has implicated himself in a vast amount of criminal conduct on the stand, an apparent strategic decision by prosecutors as they hope to take some of the steam out of the defense's questioning.
Ellis encouraged both the prosecution and the defense to not try his patience with unnecessary objections or other delays. He poked fun at himself Wednesday as he haggled with the attorneys for 20 minutes over the number and type of charts prosecutors could present during the testimony of the Federal Bureau of Investigation forensic accountant. Yesterday was particularly heated in what Politico described as "a series of prickly clashes in which Ellis snapped at one of special counsel Robert Mueller's prosecutors". Gates had testified earlier in the trial about one extra-marital affair.
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". And Manafort made millions of dollars working as a political consultant for a pro-Russia party in Ukraine before he worked for the Trump campaign, which could raise questions about Trump's friendly rhetoric towards the country.
Regarding a trading company Manafort had started with a partner in 2011, he asked with deep scepticism: "You're asking the jury to believe Mr Manafort authorised another US$250,000 as a bonus?"
During his review, he said, he discovered that numerous foreign wire transfers did not appear on general ledgers for Manafort's political consultancy and therefore, "I was not able to trace it into the tax return".
Gates' testified that he and Manafort knew they were committing crimes for years.
The testimony, stretching across three days, created an extraordinary courtroom showdown between the two former Trump campaign aides who were indicted together by Mueller but who have since opted for radically different strategies: Manafort is the lone American charged by Mueller to opt for trial, whereas Gates pleaded guilty and agreed to co-operate by testifying against his former boss. After Yanukovych lost power in 2014, "I would say it decreased the income stream", Gates, wearing a blue suit, told the court matter-of-factly. Then he suggested that Gates had not been honest.
The prosecution's case against Manafort doesn't rest exclusively on Gates. Mr Downing asked Gates. He also admitted to embezzling "several hundred thousand" dollars from Manafort including funds used to finance a London apartment to engage in an extra-marital affair.