DUPO, IL (KTVI) – A St. Clair County hazmat crew was called to Dupo High School Friday night after a potentially dangerous chemical spill.
A teacher conducting inventory in the school science lab accidentally knocked over a bottle of potassium cyanide. The chemical can be dangerous to inhale if it interacts with other chemicals.
Residents in nearby homes were told to stay inside their homes and a few businesses had to be evacuated.
As of 10 p.m., officials said the spill has been contained.