The new charges accuse Manafort of "repeatedly" contacting two anonymous people who may be witnesses against him.
The indictment, filed by Mueller in District of Columbia federal court, added Konstantin Kilimnik as a defendant and charged both men with obstructing justice in their attempts to tamper with witnesses about their lobbying work for Ukraine.
They could also be an effort by Mueller to induce a guilty plea and secure the testimony of a critical campaign adviser to Trump. Manafort's lawyers had been given a deadline of Friday to respond to those charges.
However, Manafort hit back at what he called a dubious plot meant to corruptly persuade his former business associates to perjure themselves at the upcoming trial in September.
A judge is set to hear arguments on June 15.
Mueller also accused Manafort of secretly paying former European politicians to lobby on behalf of Ukraine.
The office of Justice Department special counsel Robert Mueller has indicted Russians before in its Russia investigation, but so far none of them have been extradited to face the charges inside the United States.
They said Kilimnik may have reported to Russian intelligence officers in Moscow or Kiev or both on his work at the International Republican Institute office in Moscow where he was employed for a decade to 2005 and later on his work for Manafort in Ukraine. The indictment marked the first charges for Manafort's associate, Konstantin Kilimnik, who is believed to be in Moscow and probably safe from arrest because Russian Federation does not extradite its citizens.
Paul Manafort President Donald Trump’s former campaign chairman leaves the federal courthouse in Washington
The latest Manafort indictment comes as President Trump and his top attorney, Rudy Giuliani, continue to attack the Mueller investigation, blasting it as a partisan "witch hunt". One of the witnesses in touch with Manafort this year told prosecutors he believed Manafort wanted to "suborn perjury", the previous filing said.
Manafort messaged and called one of the witnesses shortly after he and business partner Rick Gates were indicted past year on a slew of charges related to their Ukrainian political activities, according to court papers.
Manafort's attorneys countered that prosecutors presented "scant proof" - mostly "irrelevant, innocuous" texts, and one completed phone call of five attempts that lasted one minute and 24 seconds.
The obstruction charges come just a week before Manafort is scheduled for a key hearing to determine whether he can remain free pending his trial in Washington on existing federal charges of money laundering and fraud. "Closer scrutiny of this 'evidence" reveals that the Special Counsel's allegations are without merit because Mr. Manafort's limited communications can not be fairly read, either factually or legally, to reflect an intent to corruptly influence a trial witness".
Kilimnik wasn't identified by name in the March filing but Bloomberg has confirmed it referred to him.
On Friday, Trump wouldn't rule out pardoning Manafort.
Kilimnik has denied to journalists that he has any connection to Russian intelligence. The deal was the subject of a long-running legal dispute, with Deripaska claiming Manafort had defrauded him.
The president has consistently downplayed Manafort's role in this campaign leading up to his general election victory in 2016.
Information for this article was contributed by Chad Day, Eric Tucker and Jill Colvin of The Associated Press; by Kenneth P. Vogel of The New York Times; and by Devlin Barrett, Spencer S. Hsu and Rosalind S. Helderman of The Washington Post.
Some Warriors said they would not attend a White House ceremony previous year , shortly after Golden State won the NBA Finals . We'll see if we can do it". "It will be nice when we can just get back to normal in three years". "We can play so much better".
Patients, aged 18 to 75, were randomly assigned to receive chemotherapy followed by hormonal therapy or hormone therapy alone. Jennifer Mall, 47, of Downers Grove, Ill., was a patient of Albain's who agreed to participate in the study.
It all sounds very similar to Microsoft's Xbox Game Pass , which offers access to many of that consoles' titles for $9.99/month. To this day, Origin Access has existed to provide access to older games in the PC gaming vault from Electronic Arts.
The 3,763-meter Volcan de Fuego is one of several active volcanoes among 34 in the Central American country. Rescuers struggled to reach people where homes and roads were charred and blanketed with ash.
It was also backed by Democratic senators including Sen. "It's not that we don't want fair trade", Rounds told reporters. Bob Corker (R-Tenn.), in gray tie at left, listens to President Trump speak during a rally in Nashville late last month.
The Frenchman is set to become Liverpool's second signing of the summer following the £44m purchase of Monaco ace Fabinho. He played just 17 minutes in their World Cup qualifying campaign. "Real Madrid or Barcelona might come in for me".
North Koreans did not take it kindly when US Vice President Mike Pence talked of "Libya model" approach towards North Korea . At another point, he said it was "absolutely" possible he and Kim could sign a declaration to end the Korean War.
Wednesday has a different global host country and this year's host is India, where the official celebration is taking place. Beyond focusing on plastic wastes are the other dangers which poor environmental habits constitute to human existence.
GFA dissolved by Ghana government
President of the Sports Writers Association of Ghana Kwabena Yeboah has been appointed as acting Ghana Football Association President.
Amazon Fire TV Cube is an Alexa Powered Universal Remote
You can do things like ask for the weather, check your calendar, and get your daily briefing all thanks to the streaming box. Amazon Prime members that pre-order the device on June 7 or June 8 will pay $89, giving them a $30 discount.
United States company to show Premier League matches
In February, Sky Sports paid £3.58 billion for four packages, while BT Sport spent £295 million on another package. The deal will expand awareness of Amazon Prime, the company's lucrative subscription service.
LeBron alley-oops slam dunk off backboard in NBA Finals
Durant went to the University of Texas, and you could call the school "butt", since in 2017, it came in at 9th in the BIG 12. James set an early tone barely two minutes into the contest with an wonderful dunk with an assist from the backboard.
Guatemala Volcano Eruption Kills 7; 1.7 Million Affected
A disaster authority spokesman said a change in wind direction was to blame for the volcanic ash falling on parts of the capital. Three bodies lay partially buried in ash-coloured debris from the volcano, which lies about 44 kilometres from Guatemala City .
Lava Destroys "Hundreds" More Homes In Hawaii
Some chose to stay in the area, which now has no power, cell reception, landlines or county water, officials said. County Managing Director Wil Okabe says his vacation home in Kapoho Beach Lots is also threatened.