Spillman has not been charged or arrested and the case is still under investigation, according to authorities.
The incident happened on Sept. 20 at the Gaylord Texan Resort and Convention Center, the day before Dallas beat the St. Louis Rams. The team flew to St. Louis on Saturday and Spillman saw action in the game, recording one tackle.
“We have a sexual assault report we are investigating at this time, and it does involve C.J. Spillman,” Sgt. Robert Eberling, a police spokesman told the Daily News. “He is involved in the investigation. We are looking into the matter.”
Attorney Gloria Allred sent a letter to the NFL's executive vice president and general counsel Jeff Pash Wednesday, saying the alleged victim should be interviewed by NFL investigators "on a confidential and appropriate basis."
“The fact that you chose to make public your requests to interview our client confidentially causes us concern about whether the interview itself would be kept confidential or tweeted out by you as you did with your letter to me," Allred's letter to Pash said.
Allred said that Spillman met with police the same day as the incident and was accompanied by a team official.
The NFL has been under fire for the past month over its handling of domestic violence and other crimes, promoting NFL Commissioner Roger Goodell to overhaul the entire personal conduct policy. The league hired experts to help shape the NFL's policies and programs regarding domestic violence and sexual assault.
Spillman, 28, is in his sixth NFL season and has played in all four games this season for the Cowboys. He went undrafted in the 2009 NFL draft and signed as a free agent with San Diego Chargers. He spent the last four seasons with the San Francisco 49ers before signing with Dallas.
- Scooby Axson