Rapper and alleged airport gun smuggler Petey Pablo has turned himself in.

A federal judge issued a warrant for Petey for that whole “bringing a gun to an airport on 9/11″ thing. Crazy why they make rules against that, right?

Sources close to the rapper say that he immediately made plans to cooperate with authorities upon learning about his situation and the warrant involved.

Pablo was in custody for only a few hours yesterday, before being released on his own recognizance. He must now report to a U.S. probation officer.

He must report his travel plans well ahead of time, and he has

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