From a Tar Heels release:
University of North Carolina junior cornerback/punt returner Todd Harrelson has been suspended indefinitely for violating team and university rules. His suspension is not related to the NCAA investigation.
Harrelson is the team's starting punt returner and is a reserve cornerback. He played wide receiver his first two seasons at UNC. He has four punt returns for 38 yards through the first two games of the season.