The Superintendent sent the following important notification via phone call:

Good evening, this is Douglas Scofield, the Superintendent of Iroquois.  At approximately 4:45 PM the emergency lockdown system was activated in the High School.  Everyone is safe.  The system was accidently triggered. The District still engaged its safety protocols.  The SRO responded and local law enforcement agencies cleared the entire main campus as a precautionary measure.  Again, everyone is safe.