Police in Illinois arrested five suburban Chicago high school students on Tuesday after a report of a student with a gun sent the campus into lockdown for a few hours. The five students were arrested at Highland Park High School on Tuesday morning after a student reported seeing a fellow peer with a gun, police said, according to FOX 32. Officials identified the student who allegedly had a gun with security video showing him and another student leaving the building. After searching the building, two students were arrested, District 113 Superintendent Bruce Law said in a memo to parents.