CHAPEL HILL — The investigation of North Carolina's football program has expanded into possible academic misconduct involving players and a woman who also has worked as a tutor for coach Butch Davis' son, school officials said Thursday night.

Athletic director Dick Baddour declined to identify the players or say how many may be involved, and he refused to specify what the possible violations may have been, saying only that they involved “a student tutor and student-athletes on the football team.

“We are looking into improprieties that existed outside the classroom,” Baddour said. “That's about as close to that as I can get.”

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