From TMZ.com:

WWE star Jack Swagger was arrested last night in Mississippi, TMZ has learned -- after allegedly committing several traffic offenses.

Source close to the situation says Swagger was leaving a "Smackdown" taping at Mississippi Coast Coliseum in Biloxi when he was pulled over. It's unclear what traffic offenses Swagger is accused of committing ... but they were serious enough to result in an arrest.

 Swagger -- a former WWE World Heavyweight champ -- was taken in by local sheriff's deputies ... and later released on his own recognizance.