State police said the incident took place early Friday morning at the Mohegan Sun.
Jones, 33, was charged with breach of peace, third-degree assault and fourth-degree sexual assault. State police said he allegedly made inappropriate contact with a woman in the casino's lobby. The woman's boyfriend and Jones then got into a fight.
A police report, cited by the Day of New London, said Jones knocked over the woman and punched her boyfriend in the face, causing multiple injuries. A third man stepped in and punched Jones.
Jones, a nine-year veteran player, was released by the Patriots in February 2007.