Cowboys rookie Ezekiel Elliott denies domestic assault accusation

— -- Dallas Cowboys rookie  Ezekiel Elliott has been accused of domestic violence but has denied the allegation.

A woman who claims to be Elliott's former live-in girlfriend has accused the former Ohio State star of assaulting her multiple times over the last week, according to police reports filed Friday morning in Columbus, Ohio and obtained by ESPN.

Elliott, who turned 21 on Friday, denied assaulting the woman and told police that he never lived with her. He has not been arrested or charged with a crime.

The Cowboys are aware of the police reports but have not officially commented.

The woman, identified as Tiffany Thompson, told police that Elliott assaulted her while they sat in a parked car early Friday morning, according to one police report. She told police that she had pain in her right wrist and a red mark but declined medical treatment, according to the report.

Four witnesses, including one who was sitting in the car at the time of the alleged incident, told police that they did not observe an assault.

Thompson also accused Elliott of striking her "several times" and "leaving bruises on her arms" over a five-day period from Saturday to Wednesday, according to a second police report. Elliott, however, told police that he never touched Thompson in "a harmful manner," saying she suffered the bruises during a bar fight.

Thompson told police that she lived with Elliott for approximately three months, but the running back stated that only payed for her rent and co-signed on her vehicle.

Columbus police have referred Thompson to the prosecutor's office, citing "conflicting statements" between Elliott, the woman and witnesses along with "the inability at the time of the report to prove recent co-habitation."

ESPN typically does not release the names of alleged domestic violence victims, but Thompson, 20, posted Instagram photos Friday showing bruises on her body. One of her posts was tagged to Elliott.

ESPN's Austin Ward and Todd Archer contributed to this report.