Updated

The prosecutor leading an investigation into fraud in an academic department at North Carolina says a retired administrator tied to the case won't face charges.

Orange County district attorney Jim Woodall said Tuesday in a release Deborah Crowder from the formerly named African and Afro-American Studies department is cooperating with investigators. She will also cooperate with a school-sanctioned independent investigation by former U.S. Justice Department official Kenneth Wainstein.

The problems in the department ranged from no-show classes with significant athlete enrollments to unauthorized grade changes, dating to the late 1990s.

Two school investigations blamed Crowder and ex-chairman Julius Nyang'oro. Nyang'oro was charged in December for receiving $12,000 to teach a summer 2011 lecture course filled with football players and instead treating it as an independent study requiring a paper.