Paul Manafort, jail booking photo, Alexandria Detention Center.

The office of special counsel Robert Mueller III accused former Trump campaign chairman Paul Manafort of breaching his plea agreement with special counsel prosecutors, writing in a Monday court filing that he committed federal crimes by lying to federal investigators.

In a status report filed late Monday, prosecutors asked U.S. District Judge Amy Berman Jackson of the District of Columbia to schedule a sentencing date for Manafort. They said Manafort's alleged breach of his plea agreement meant there was “no reason” to delay sentencing.

“After signing the plea agreement, Manafort committed federal crimes by lying to the Federal Bureau of Investigation and the Special Counsel's Office on a variety of subject matters, which constitute breaches of the agreement,” prosecutors wrote in the court filing.

“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, including those after signing the plea agreement herein,” they added.

Manafort entered into a plea agreement with prosecutors in September, a day before jury selection was set to begin in his Washington, D.C., federal trial. He was previously convicted on  bank and tax fraud charges following a late summer trial in Alexandria, Virginia.

Attorneys representing Manafort indicated in Monday's filing that Manafort had met with the government multiple times since September, in an effort to cooperate with the government.

Manafort is represented by Kevin Downing, Thomas Zehnle, and Richard Westling.

“Manafort has provided information to the government in an effort to live up to his cooperation obligations. He believes he has provided truthful information and does not agree with the government's characterization or that he has breached the agreement,” they wrote.

“Given the conflict in the parties' positions, there is no reason to delay the sentencing herein, and he asks the Court to set a sentencing date in this matter,” they added.

Read the court filing here.