Manafort lied "on a variety of subject matters", violating his plea agreement, prosecutors allege in the three-page filing signed by both the defense team and the prosecution.
Manafort said in the same filing he disagreed with Special Counsel Robert Mueller's assertion that he lied to investigators.
Manafort pleaded guilty to conspiracy and witness tampering on September 14, nearly a year after he was first charged and following his conviction by a jury in a separate but related case on eight tax and banking crimes.
The breakdown in Manafort's agreement with prosecutors raises the possibility that he is seeking to curry favor with Trump in a bid to get a presidential pardon by protecting others who worked on Trump's campaign from prosecution, a former US prosecutor told Reuters.
In August, Manafort was convicted in federal court in Virginia of bank fraud and tax evasion related to his work as a political consultant in Ukraine.
A federal judge rejected his appeal to delay his prison term while he waited for an appeals court to rule whether the Mueller appointment was constitutional.
Yet court filings indicate it is fairly advanced, with a focus on whether there is enough evidence in multiple contacts between Trump campaign aides and Russians to support charges of a criminal conspiracy to disrupt the United States election.
President Trump has distanced himself from Manafort, playing down Manafort's role in the campaign. "He believes he has provided truthful information and does not agree with the government's characterization or that he has breached the agreement". Manafort agreed to a plead guilty in a deal in September in his second trial for fraud and money laundering. Well, now Robert Mueller is alleging that Manafort has been lying to his team, as well as to the Federal Bureau of Investigation. The special counsel team's court filing provided no details about the prevarication.
After at least a dozen sessions interrogating him, the special counsel's prosecutors have decided that Manafort does not deserve leniency.
Stephen Curry involved in vehicle wreck in California
Authorities say Curry was driving a black Porsche on Friday when the driver of a Lexus lost control and struck his auto . A auto spun out and hit him before a second vehicle rear-ended his Porsche, which sustained damage.
Trump called Mueller the "exact opposite" of a saint who is doing "TREMENDOUS" damage to the country's criminal justice system by probing Russian interference in the 2016 election.
In the same joint status report filing, Manafort's legal team pushed back against the government's assertion.
"I have never been contacted by anyone connected to WikiLeaks, either directly or indirectly", Manafort said in a statement.
The server reference relates to the Democratic National Committee, whose emails were hacked in a cyberattack believed to be an attempt by Russian Federation to influence the outcome of the 2016 election.
"We discuss things that are appropriate", Giuliani said.
But with prosecutors saying he breached the agreement, Manafort now faces serious repercussions such as the possibility of prosecution on additional charges, including the 10 felony counts dropped when he made the deal.
The September plea deal with Manafort probably gave the prosecutors access to information that could prove useful to the Russian probe.