9:25 PM PST -- Sources backstage say an argument started right before one of the opening acts was about to perform. We're told at some point, a gun was pulled and people from backstage ran into the crowd as shots rang out.
9:10 PM PST -- Law enforcement tells TMZ a 33-year-old male has died from a gunshot wound to the stomach.Gunfire just erupted at a T.I. concert and multiple people have been hit ... TMZ has learned.
Law enforcement tells us the rapper was set to perform at Irving Plaza in NYC Wednesday night when the shooting occurred. We're told at least 2 men and 2 women were shot and it looks like one of the guys might not survive.
Sources close to T.I. say the rapper had not yet taken the stage when the incident happened.
Cops say at this point it's unclear how many shooters were involved and they don't have any suspects.
Story developing ...