Carter was arrested in Kimble County, Texas yesterday after being pulled over on Interstate 10 for speeding. When authorities searched his vehicle they found at least two ounces of marijuana inside.
Carter is currently in jail awaiting an arraignment.
The singer caused a rift between Hilary Duff and Lindsay Lohan after he two-timed both of them.
The 20-year-old is the younger brother of Backstreet Boys singer Nick Carter.