Bill Cosby has sued one of his accusers, Andrea Constand, for participating in an investigation regarding the comedian's alleged history of sexual assault.

According to the Associated Press, Cosby has filed a breach-of-contract lawsuit against Constand for breaking a confidentiality agreement they negotiated as part of a civil suit Constand filed in 2005, after authorities elected not to prosecute Cosby for allegedly sexually assaulting her.

In addition to Constand, the lawsuit names Constand's mother, her lawyer, and the parent company of the National Enquirer, which has covered the case. Cosby is seeking full repayment for the settlement, plus interest and damages.

Constand says Cosby drugged and raped her at his Pennsylvania home in 2004. Last December, Cosby was charged with aggravated indecent assault for the incident in Dec. 2015.

Court papers detail chilling sexual assault claim against Bill Cosby

Cosby's suit states that Constand violated the terms of the settlement by giving interviews to Pennsylvania authorities when they began re-investigating her case last year, as the statute of limitations was about to expire.

"Despite being under no legal obligation to discuss any aspects of the events and allegations ... and despite being expressly prohibited from disclosing such information to anyone, Andrea Constand volunteered to participate and disclosed such information to the district attorney and others," Cosby's lawyers wrote.

Constand's lawyers maintain that the settlement allows them to speak to law enforcement, and that anything otherwise would amount to obstruction by the lawyers who drafted the agreement.

To date, more than 50 women have accused Cosby of sexual assault.