Kenneth Chu, 26, a teacher at Ronald Reagan High School in Milwaukee, is facing the following charges for allegedly having inappropriate communication with students at the school: Causing a child 13-18 years of age to view or listen to sexual activity; and exposing a child to harmful material (three counts)

School officials received a complaint from an alumnus that Chu "was reaching out to recent graduates and flirting with them," according to the criminal complaint. It says that Chu apparently "created several fake social media accounts to follow and chat with female graduates," Fox 6 reports.

Chu was escorted from the building after the complaint from the alum. In the meanwhile, a 16-year-old girl student at the school was asked to speak with the principal as well as the police. Chu started communicating with the 16-year-old via Snapchat in the summer of 2018 and began to send nude pictures of himself to the girl. During the conversations, Chu would allegedly ask the girl "if she wanted to sneak off and fool around," according to the criminal complaint.

The document further indicated that Chu demanded the girl send him nude photos herself and "kept threatening her, saying he had the power to suspend her." There were several other moments when the teacher "asked (the girl) under his breath if she wanted to sneak off with him and 'mess around.'" He apparently had sent the girl "video and images of his naked body approximately 40 times. This would occur on school nights and weekends," with one text message saying he was "crushing pretty hard." While another text read, "I've fallen for you."

According to the complaint, two other teenage girls were also interrogated by the police. One of them said that "(Chu) used Snapchat to communicate with her. (Chu) asked her to see her room and what she wears to bed" before she deleted him as a contact on her phone.

Another student alleged that Chu "commented on (the girl's) looks and clothes." and "asked (the girl) if she was a spontaneous person and if she wanted to go on a trip to Chicago with him." There were "other comments made to other current and former students of which the State is aware," the complaint stated. Having said that, Chu made his first court appearance on Friday, December 21. He is set to appear next for a preliminary hearing on January 4, 2019.

If convicted, Chu faces up to 16 years in prison.