Ezekiel Elliott was at a Texas bar over the weekend when a violent fight broke out ... and now, cops tell TMZ Sports they're investigating if members of the NFL star's crew were involved.
According to Frisco Police Dept. documents we obtained, the disturbance happened at around 1 AM at Concrete Cowboy -- a nightclub located a few yards from the Dallas Cowboys' practice facility in Frisco.
Officers wrote in an incident report that "a male and a female were physically assaulted by a large group of males" in the fracas. An FPD spokesperson added in a statement that witnesses alleged "members of Elliott's group may have been involved."
Cops, however, said a probe into the allegations is still ongoing ... and detectives are "still working to confirm the details of the incident."