An employee at Harrah's Casino has filed a civil lawsuit saying Pittsburgh quarterback Ben Roethlisberger sexual assaulted her.

But the NFL star's lawyer told NBC Sports that the charges by Andrea McNulty are false. "Ben has never sexually assaulted anyone, especially Andrea McNulty," said David Cornwell.

The civil suit, filed last week in Washoe County, Nevada, says the attack occurred in July 2008. McNulty claims that Roethlisberger asked her to come to his hotel room to fix the television. Once she arrived, he forced her to have sex with him. Roethlisberger faces several civil charges, including assault, sexual assault and battery, and intentonal infliction of emtional distress.

No criminal complaint has been filed.

"The timing of the lawsuit and the absence of a criminal complaint and a criminal investigation are the most compelling evidence of the absence of any criminal conduct," Cornwell said.

"If an investigation is commenced, Ben will cooperate fully and Ben will be fully exonerated."