"We are always concerned with issues involving our players," coach Steve Spagnuolo said.
Jackson called the accusations "untrue" and "hurtful" in a statement issued by one of his agents, Tom Savage of U.S. Sports Advisors.
"It's disheartening that I have to address any alleged allegations 10 months later, but I have read the accusations made by Supriya Harris, and they are untrue," Jackson said in a statement posted on his Web site. "The accusations are especially hurtful because those who truly know me know that those actions would be out of character for me. Miss Harris is the mother of my son, a son that I love and that I willingly support emotionally and financially. I will address this matter thoroughly through the appropriate avenues, but not through the media."
Harris of Mableton, Ga., filed a complaint with Las Vegas police this week, saying the two-time Pro Bowl running back repeatedly pushed her to the ground in March 2009 and bloodied her hip. Copies of the report were posted online by CBS Sports.
Las Vegas police spokeswoman Barbara Morgan said authorities haven't been in contact with Jackson, nor is an active investigation under way. She said the police report made in LaPlace, La., hadn't yet been provided to Las Vegas police.
In the report, Harris said Jackson "flung" her against a door until Jackson's nephew interceded. She told police that Jackson later urged her to say she was injured during a fall in the shower.
The Associated Press contributed to this report.