Belvidere Police Chief Shane Woody says a report of a 21-year-old man who posed a threat to one or more of the students triggered a large police response on Thursday.
School officials say Belvidere High School, Belvidere South Middle School, and Meehan Elementary School were all placed on lockdown due to a report of a safety threat in the area.
Students are being kept in the school while police investigate. Chief Woody said the threat was “outside of the middle school” and that children were being kept inside the school as a precaution.
Around 3:30 p.m., Belvidere School District 100 announced via their Facebook page that police had given them the “all clear” to begin dismissing students.