Police say this happened between January 1st and January 31st, but wasn't reported until last week.
Police responded to the school at approximately 2:00 p.m. and interviewed the girl who stated she had been inappropriately touched by an adult male inside the school.
The suspect, William R. Arney, Sr., 56, was identified by the victim and was arrested on scene and charged with aggravated sexual battery.
The school has already notified parents that a security breach had happened at the school. They provided parents with an update after they were given information from police about the incident.
Arney is out of jail on a $1,000 bond. He is not allowed to have contact with the victim, visit Bay View Elementary, or to be alone with children under 15 except for his own.