MINNEAPOLIS — A former head football coach for Minnesota State University, Mankato, who was cleared of child pornography charges last year but reassigned to an administrative position, is no longer employed at the university, the school said Wednesday.

However, a faculty union said Todd Hoffner was fired and that it has filed a grievance over his termination.

Hoffner’s last day on the university’s payroll was Tuesday, school spokesman Dan Benson told The Associated Press. He declined to say whether Hoffner was fired or left on his own, calling it a private personnel matter, and also would not give further details.

Hoffner was charged with possession of child pornography in August after school officials found videos of his naked children on his work-issued cellphone, which he had turned in to be repaired. A judge cleared him in November, ruling that the short videos of his children acting silly after a bath were not child porn and showed nothing illegal.

After the criminal case was dismissed, university officials removed Hoffner as head football coach, reassigned him to an administrative role, as assistant athletic director for facilities development, and suspended him for 20 days for an unspecified reason. He tried to fight his reassignment and suspension though his union, the Inter Faculty Organization, which represents faculty in the Minnesota State Colleges and Universities system.