Plainfield police are investigating a criminal incident that happened outside of Plainfield High School on Wednesday.
Investigators said information was developed that led them to believe the incident involved a faculty member and a student.
The school's administration and the superintendent's office was immediately notified, according to police.
Both worked with police to ensure the students on the school's campus were safe.
The Plainfield School District put the faculty member on administrative leave while the investigation into "inappropriate conduct" continues.
Because of the nature of what happened, the ages of the people involved and the fact that it's a criminal investigation, no further details were provided, police said.
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