UPDATE: It is believed to have been pepper spray.
RS Fan: ” A young male was seen with his parent leaving the school. He gave teachers and a police officer the middle finger. My child was in the library when someone sprayed (pepper spray). My child was in the hallway when the male child was being escorted outside the building.”
Details are minimal right now, The only information is several emergency personnel were dispatched to the Belvidere North High School, in reference to several students coughing due to an unknown substance in the library area. The library area has been evacuated. This is still developing.