Police are investigating a photo that was sent to the District 117 School Superintendent on Labor Day.
According to WICS TV20 in Springfield, Superintendent Steve Ptacek received images of a student holding a gun in front of Washington Elementary School.
Ptacek told WICS that the images were screenshots from Snapchat.
Police determined that the weapon in the photos was a pistol style BB gun. The individual in the images has been identified as an older student who attends class at another facility.
An investigation by Jacksonville Police is ongoing.