According to the police report obtained by PEOPLE, a teammate dared 18-year-old Hunter Osborn to expose himself through the waistband of his football pants.
The prank went unnoticed until the offending photo was included in the yearbook that was distributed to 3,400 students. The photo was also printed in football programs all season long.
Mesa Public Schools
When the school district learned of the prank, they called the Mesa Police Department. Osborn was charged with 69 misdemeanor counts of indecent exposure – one for each person present for the photo shoot. He was also charged with one felony count of furnishing harmful items to minors, because some of the football players were as young as 15.
If people in the photo are older than 18 and do not wish to press charges, the number of criminal counts could be reduced. PEOPLE was unable to find an attorney for Osborn or to reach him or his family for comment, but the police report states that he confessed to the prank and expressed remorse.
Supporters of Osborn have created a Change.org petition in which they say that he's a "scapegoat" who "needs to be held accountable for his actions but that doesn't mean ruining his life." (If he is convicted, he could be forced to register as a sex offender.
In a statement, Mesa Public Schools tells PEOPLE that they are "dismayed" by the photo. "Disciplinary action will follow policy and may be based on the outcome of the police investigation."
While the small size of the photograph as published makes the details difficult to discern, the yearbook has been recalled so the school can make a minor but critical edit for the inappropriate content."