Karen Sypher's attorney is no longer representing her as a defendant in a federal extortion case. Sypher and her now-former attorney, Thomas Clay, say their agreement to part ways was mutual.

"They're very serious charges, and we intend to defend against them vigorously," Clay said in April.

But Thursday afternoon the high-profile Louisville attorney filed a motion with the court to withdraw as Sypher's lawyer.

"Mrs. Sypher and I had a meeting this afternoon, and at the conclusion of that meeting, we decided that it would be better for her to seek other counsel," Clay said, citing irreconcilable differences on which he could not elaborate.

What Clay could elaborate on is that he has ended his attorney-client relationship with Sypher in both the federal criminal case against her and the divorce from her husband, Tim. He's the UofL men's basketball equipment manager. And Karen is accused of trying to extort millions of dollars from the coach, Rick Pitino.

Sypher told FOX 41 by phone Thursday that she is working on hiring another attorney within the next day or so.

"I hope she finds the best attorney she can to represent her," Clay said.

Sypher has always maintained her innocence, ever since her exclusive interview with FOX 41 a few months ago, when Sypher said Pitino asked her what he could do to keep her quiet about an encounter they had: "He said, 'I have. What do you want me to do, Karen? I'll give you $100,000 and I'll leave and go to the Suns. I've already been offered.'"

Louisville Metro Police say Sypher talked to detectives Thursday but did not file a criminal complaint.

No trial date has been set for Sypher's criminal case in federal court. The divorce case is set for mediation later this month.