New Hanover County Sheriff's Office said Hairston was arrested for outstanding warrants in Orange County for "harassing communications."
Hairston, 24, was booked at the county jail under a $1,000 secured bond.
He was later released.
Hairston played for the Tar Heels from 2011 until he was suspended in 2013.
The Miami Heat drafted Hairston in the first round of the 2014 NBA Draft. He went on to play for the Charlotte Hornets and the Memphis Grizzlies. He spent the past season in the NBA Development League.
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