Paul Manafort says he didn't lie and special counsel Robert Mueller can't prove he did.

Mueller claims Manafort lied to investigators and the FBI while he was supposed to be cooperating with a probe into Russia's interference in the 2016 election. As a result, Manafort violated his plea deal, Mueller claims.

Manafort's filing on Wednesday came just hours before U.S. District Judge Amy Berman Jackson is scheduled to hold a closed-door hearing when she plans to announce her findings on the issue first raised by Mueller's office in November. Jackson heard arguments in a sealed proceeding on Feb. 4. The judge's rulings will shape how harshly she punishes Manafort on March 13.