Police investigating alleged 2017 sexual assault by Dak Prescott - ESPN

Dallas police on Thursday confirmed they are investigating an alleged 2017 sexual assault involving Cowboys quarterback Dak Prescott.

The investigation is a result of a complaint filed Wednesday by a woman who alleges Prescott assaulted her in the back of an SUV seven years ago.

On Monday, Prescott filed a suit in Collin County claiming he is being extorted for $100 million by the woman and her attorneys. Separately, police in Prosper, Texas, where the quarterback lives, are now investigating Prescott's extortion claim.

Prescott's attorney, Levi McCathern, questioned the timing of the woman going to police seven years after the alleged assault took place and after the extortion investigation began this week.

«Clearly they think that this will somehow mitigate their criminal responsibility for attempting this illegal shakedown,» McCathern told ESPN. «It won't, and it is a true disservice to the real survivors of sexual abuse.

»We look forward to working with all law enforcement in reaching a just conclusion to this case."

According to Prescott's suit, he is seeking monetary relief in excess of $1 million, and he has committed to donating any of the relief to the Joyful Heart Foundation, whose mission is to «heal, educate and empower survivors of sexual assault, domestic violence and child abuse,» or another «like-minded organization.»

The 11-page lawsuit also alleges defamation and slander, defamation per se, business disparagement, tortious interference with current and/or prospective business relations, civil conspiracy and intentional infliction of emotional distress.

In January, Prescott received a letter from attorneys Bethel and Yoel Zehaie on behalf of the woman accusing Prescott of sexually assaulting her,