Newark police said Tony Miller, 32, admitted to having sex with a student and making inappropriate comments to current and former students on facebook.
Now, the Newark High School assistant band director could soon be facing new charges.
10TV obtained some of the social media conversations between Miller and five girls between 2011 and 2013.
Many of the comments are sexually explicit.
The conversations show Miller even invited one of the girls to his house while he was babysitting his son.
When confronted by police, detectives say Miller agreed the social media conversations were inappropriate.
In a facebook conversation from last November, prosecutors said Miller spoke with one of the girls.
Tony Miller: 'I can't lie... You have a nice booty haha.'
Girl: 'Thanks xD.'
Tony Miller: 'Hehe, would it freak you out if I told you I looked at it a lot this season?!'
Girl: 'LOL, not really xD'
Tony Miller: 'Hehe, good, 'cuz I did....You are one of the few that know how to wear yoga pants properly.'
Girl: 'Haha xD'
Tony Miller: 'I know I'm bad, but some of us were just made this way hahaha.'
Sgt. Scott Snow with the Newark Police Department said more alleged victims are still coming in with their stories about Miller. "A number came in yesterday, I think we had four or five come in today," he said.
Police said Miller admitted he exchanged nude pictures with females students and engaged in sexual conduct with several girls after they graduated.
Miller is facing a sexual battery charge, but prosecutors said the grand jury will consider possibly more charges as more alleged victims come forward.
"It's going to take a while to put everything together," said Sgt. Snow. "Flow charts, time lines and that kind of thing, just to see how many true victims we have in a criminal sense, and how many we have in a moral sense."
Sgt. Snow said this case reinforces a good lesson for parents.
"We were alerted to this by an alert parent," he said. "Parents need to be more cognizant of what their children are doing on the internet or facebook. There's no right to privacy that your child possesses, it simply doesn't exist."
Sgt. Snow said, "You're the parent. You have not only the right, but the obligation to police what your child is doing."
"It's hard to put in words what your emotions are feeling," said Stacie McFarland, the president of the Pride of Newark Band Booster Club. Her daughter is in the band.
"It's difficult, we do talk about it, she's disappointed," she said. "I don't see it as a black eye to the program. It is separate from the band program itself."
McFarland says the band will move forward in a positive manner and concentrate on the upcoming marching season.
In another facebook conversation late last year:
Miller: 'Did you say anything to anyone about what I said to you?'
Girl: 'Nope. I promised I wouldn't.'
Miller: 'You promise no one at all?'
Girl: 'Pinky promise!!'
Miller: 'Well I got called into a meeting tomorrow and I don't know why.'
Girl: 'Well I promised I haven't said anything to anybody.'
Miller: 'Ok thank you. No one could have seen anything we wrote??'
Miller: 'Ok. I just want to say I'm sorry if anything offended you.'
Girl: 'Nothing offended me, don't worry :)'
Miller: 'I'm so nervous. I have no idea what this is about.'
Days later, Miller was suspended without pay for three days - after a second violation of district policy in two years for communicating with students over the internet.
A grand jury will consider any additional charges in the next week.