It was a violent fistfight that started inside a popular Louisville nightclub and spilled into the streets.
Now, several Louisville Metro Police officers are under investigation.
That's because one of the officers is accused of beating an innocent man so badly that he had to go to the hospital.
It all started at Prime Lounge on Main Street in downtown Louisville last December.
A source close to the investigation tells WDRB News that at least a dozen off-duty Metro Police officers were inside when one of them allegedly attacked another patron.
"Don't know why they got into an argument; I don't know why they got into a fight. It just happened," says Joey Wagner, the managing partner of Prime Lounge.
Wagner says he witnessed the whole confrontation.