JOLIET (CBS) — At least one gunshot was fired Monday afternoon during a confrontation outside Joliet Central High School, school authorities reported.

The Joliet Police Department immediately responded, and the school was placed on lockdown, the school said Monday evening. The incident began in the late afternoon at Central, 201 E. Jefferson St.

“At 4:05 p.m. today, a Joliet Central High School staff member reported hearing gunfire outside the Central Campus,” school officials said.

“The perimeter of Joliet Central High School was secured, all JTHS procedures were followed, and athletes and students were placed in safe locations.”

“At 4:40 p.m., the lockdown at Joliet Central High School ended, and students were released safely. No one was injured or hurt.”

The school was able to confirm that a confrontation did occur outside of the Central building, and that at least one gunshot was fired.

On Tuesday, there will be an increased police presence in and around the Central Campus. Metal detecting will occur on Tuesday morning as students enter the building, the district said.

(Source: Sun-Times Media Wire © Chicago Sun-Times 2012. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)

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