Shots Fired During Mike Epps Birthday

Law enforcement sources tell TMZ, cops were called to Tru nightclub just after midnight in response to a call about a shot fired inside the club, where Mike Epps was celebrating his birthday.

According to law enforcement sources, a fight had somehow broken out between Epps' camp and other clubgoers -- we don't know why -- and someone pulled out a gun and fired a warning shot.

It's unclear who fired the gun -- but we're told everyone in the club ran for the doors, including Epps, who then fled the scene. Nobody was shot and there are no suspects.