A US federal judge has sent President Donald Trump's former campaign chairman Paul Manafort to jail pending trial, after Special Counsel Robert Mueller charged him last week with witness tampering.
Mr Manafort, who has been a focus of Mr Mueller's investigation into Russia's role in the 2016 US presidential election, pleaded not guilty to the charges before district judge Amy Berman Jackson in Washington.
But the judge revoked Mr Manafort's bail conditions, sending him to jail.
He has been indicted by Mr Mueller in both Washington and Virginia on a number of charges, including conspiracy against the United States.
Mr Manafort's trial in the Washington case is scheduled for September.
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His trial on the related charges in Virginia is set for next month. He has pleaded not guilty to all charges.
Mr Manafort is currently confined to his home in the Washington suburb of Alexandria, Virginia, and forced to wear a GPS monitoring device.
Mr Mueller, whose investigation has overshadowed Mr Trump's presidency, is investigating whether the president's 2016 campaign colluded with Russia and whether Mr Trump has unlawfully sought to obstruct the inquiry.
President Trump has called Mr Mueller's investigation a witch hunt and has denied wrongdoing.
Judge Jackson had previously rebuffed Mr Manafort's repeated requests to end his home confinement in exchange for pledging $10m in real estate as collateral.
Wow, what a tough sentence for Paul Manafort, who has represented Ronald Reagan, Bob Dole and many other top political people and campaigns. Didn’t know Manafort was the head of the Mob. What about Comey and Crooked Hillary and all of the others? Very unfair!
— Donald J. Trump (@realDonaldTrump) June 15, 2018
An 8 June indictment charged Mr Manafort and Konstantin Kilimnik, a Manafort aide and political operative, with alleged ties to Russian intelligence, with tampering with witnesses about their past lobbying for Ukraine's former pro-Russian government.
The indictment accused Mr Manafort and Mr Kilimnik of attempting to call, text and send encrypted messages in February to two people from a political discussion group - the so-called Hapsburg Group - that Mr Manafort worked with to promote Ukraine's interests in a bid to sway their testimony.
Earlier this month, Mr Mueller's legal team asked the judge to revoke Mr Manafort's bail, saying his "obstructive" conduct "instills little confidence that restrictions short of detention will assure Mr Manafort's compliance with the court's orders and prevent him from committing further crimes."
Mr Manafort has long-standing ties to a pro-Russian political party in Ukraine and a Russian oligarch close to the Kremlin.
The charges against Mr Manafort in Washington include conspiracy to launder money, conspiracy to defraud the US and failing to register as a foreign agent for the pro-Russia Ukrainian government under former President Viktor Yanukovych.
None of the charges make reference to alleged Russian interference in the election nor the accusations of collusion between Moscow and President Trump's campaign.
The Kremlin has denied meddling in the election.
