Green Bay safety Nick Collins was involved in a post-game altercation with a fan at Soldier Field, according to a report from Fox 6 Sports in Milwaukee.
The station says it has video of the incident, but can't air it until later in the day due to NFL restrictions.
Through a series of tweets, the station claims Collins was "provoked by a Bears fan" and proceeded to throw something at the offending party -- possibly a roll of tape.
He was then reportedly restrained by Packers wide receiver Donald Driver.
Off-camera in the locker room, Collins said the fan used a racial slur and apologized to all fans for his actions, according to the station.