PROCTOR (AP) — The football coach at a Minnesota high school has resigned amid a police investigation into player misconduct on his team.

The Minneapolis Star Tribune reported that Derek Parendo resigned from his coaching and teaching jobs at Proctor High School on Monday. He had worked for the school district for 21 years.

Officials canceled the football season for all high school grades in September amid the investigation. Police have said little about the investigation because it involves juveniles. Superintendent John Engelking told school board members on Monday night that extra counseling has been offered to students and the investigation is “all consuming.”