Minneapolis police arrested a man on charges that he engaged in sex acts with a student in a high school bathroom.

According to CBS Local Minnesota, the 42-year-old man, who has not been identified, is accused of entering Champlin Park High School during school hours on Wednesday for a pre-arranged encounter in the bathroom. The student reportedly let him into the building.

The school’s principal reportedly addressed the incident in a note to parents that said multiple students had seen the man acting suspiciously and notified school officials. Security officers approached the man and detained him until police arrived.

The man was charged with criminal sexual misconduct.

The incident has been widely discussed on a Champlin Community Group Facebook page, with some posters suggesting there is more to the story than what has been reported in the news. One poster said that the man and the student may have been videotaped by another student while in the bathroom. None of this is confirmed.

Parents and students alike are concerned by how easily this man entered the building in the middle of a school day.

“The question is, how did the person get in?” parent Troy Ludgate asked CBS. “Because they generally have very good security here. The other school and this school you have to slide your driver’s license in. There’s somebody sitting there and it’s not an easy school to access.”

“I don’t know if it was easy for them to get in,” one student said. “But seriously that’s not right that someone can get in the school.”

The incident is currently under investigation.