Former Trump campaign chairman Paul Manafort lied repeatedly to the Federal Bureau of Investigation after making a plea agreement to cooperate with special counsel Robert Mueller, prosecutors charged Monday.
"The government will file a detailed sentencing submission to the Probation Department and the Court in advance of sentencing that sets forth the nature of the defendant's crimes and lies".
Manafort states as part of the filing that he does not agree with prosecutor's description.
They do argue this leaves Manafort exposed to the possibility of a more severe prison sentence under federal guidelines.
Mr Manafort's attorneys said in the same filing that Mr Manafort had met with the Government on several occasions and provided information "in an effort to live up to his cooperation obligations".
Manafort had agreed to a plea deal in September a month after he was found guilty by a jury of various crimes including tax evasion charges and two bank fraud charges.
The president had defended Manafort in various tweets expressing anger at the special counsel investigation, which he has called a "witch hunt" numerous times. He remains jailed while awaiting his sentence.
But with prosecutors saying he breached the agreement, Manafort now faces serious repercussions such as the possibility of prosecution on additional charges, including those prosecutors dropped when he made the deal.
But in plea papers, Manafort agreed to cooperate "fully and truthfully" with the investigation conducted by the office of special counsel, including participating in interviews and debriefings, producing any documents in his control, testifying, and agreeing to delay sentencing until a time set by the government.
Before the plea, Manafort's defenders had long insisted that he would not cooperate with Mueller.
The former Trump campaign manager knew about the infamous June 2016 Trump Tower meeting attended by Donald Trump Jr., Jared Kushner, Manafort himself and a lawyer with ties to the Kremlin who claimed to have dirt on Trump's presidential rival Hillary Clinton.