T.I. has been re-arrested by federal authorities, though it's unclear why.

Sep, 02, 2011

For two days, things were really looking good for T.I. He was welcomed home from a 10-month prison sentence with a reality show and a book deal.

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And just as fast, the 'King of the South' may be back in trouble with the law. TMZ reports that T.I. is back in federal custody because of what may or may not have occurred on his bus trip from a federal prison in Arkansas to a halfway house in Atlanta. "There appears to be confusion surrounding the method of transportation," his lawyer tells the New York Daily News.

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Though it's unclear why T.I. is back in a facility, his lawyer confirms that it's not drug-related. His uncle says it's not alcohol-related either, because T.I. "stopped drinking a long time ago."

What could it be?

UPDATE: Federal prison officials allegedly objected to T.I.'s mode of transportation to the halfway house -- a luxury tour bus. According to his wife, Tameka "Tiny" Cottle, Arkansas prison officials never said T.I. had to travel in a private van and when the bus arrived, they walked him over to it. "They should have said something before he got on the bus," she said. "T.I. would have politely gotten into a van."