"When we find out about it, we immediately start an investigation." John Barry, Aurora Public Schools superintendent, said.

The district is working with police as they investigate alleged "inappropriate physical behavior" between some members of the Hinkley High School junior varsity and varsity boys soccer teams.

The Denver Police Department says it is investigating the incident because the bus was in Denver at the time of the alleged incident. Police say they're looking at possible charges of misdemeanor sex crime and misdemeanor harassment.

"Any inappropriate behavior is troubling and in our school we have strict rules on what is acceptable," Barry said.

9NEWS has learned the incident occurred on the team's bus ride back from a game against Arvada West High School on Sept. 25.

Barry says the district has a zero tolerance policy toward this type of behavior. Due to privacy laws, Barry says he cannot specify what happened or what disciplinary actions were handed out to the teachers supervising the students on the bus.

Barry did state in a written release that for the students involved their punishment will include expulsions or suspensions.

"Any inappropriate behavior is trouble. And in our school we have strict rules on what is unacceptable. And we will not tolerate inappropriate behavior of any kind," Barry said.

The district's incident response counseling team is providing support for students. Barry says the district met with all coaches to discuss appropriate student conduct.

"I don't want to come to school knowing that kids do that to other kids. It kind of makes you feel uncomfortable," Georginia Tenorio, a ninth grade student, said.

Last week, Aurora Public Schools launched a separate investigation, interviewing students who may have been involved and the adults who were supervising them.

Barry says the school district met with all coaches to "discuss appropriate student conduct" and to "reiterate our policies."

He wants to add that this should not take away from what called "amazing" sports programs in Aurora.

"We in Aurora Public Schools are deeply concerned by the situation involving our students in this case," Barry said. "We certainly do not think this is representative of our students."