Centralia police were investigating Friday after shots were fired from a car near Lincoln Elementary School, WJBD reported.
The shots were aimed at adults on the sidewalk across the street from the school, Centralia police Chief Brian Atchison told WJBD. No arrests had been made as of Friday afternoon, but police were questioning people in the area.
No one was harmed, and police don't believe the school was being targeted in any way.
A group of students were headed outside to the playground when they heard the gunshots, WJBD reported. The school went into defense for an active shooter, and the district kept all students in the building for the rest of the afternoon.
Centralia City Grade School Superintendent Craig Clark told WJBD that he was pleased with how faculty and students followed the active shooter plan.
Police and schools have been on high alert after a man walked into a school in Parkland, Florida, and killed 17 people. Cahokia, East St. Louis and Granite City saw threats of violence this past week, but none turned out to be legitimate.