A report of a person with a gun entering Joliet Central High School Wednesday was "given falsely" and a person is in police custody, district officials said.
The southwest suburban high school was placed on lockdown Wednesday morning after someone reported an unconfirmed sighting of a person with a gun entering the building, district officials said. That report was later found to the "unsubstantiated" and the person who made it was taken into custody soon after.
Still, district officials said the school remained on lockdown as of 10 a.m. as police worked to "secure the building and develop a plan for students to be released to classes."
Students not inside the school when the lockdown took effect were being held on busses outside the building. No one was being allowed to enter the school Wednesday morning.
"The safety and security of our students and staff is always our first priority," District 204 said in a statement.
The lockdown was ultimately lifted just before 10:30 a.m.