Workers Call Police Amid Confusion Over Active Shooter DrillA misunderstanding about an active shooter drill at a downtown building led to police being called for, what they thought was, the real thing.
Mistaken Report Of Shots Fired Prompts Massive Response In West SuburbsA misunderstanding on the phone led to a massive police response at a ComEd office building in Oakbrook Terrace on Tuesday.
False Alarm About Suspicious Package Shuts Down Part Of Blue LineThe Forest Park branch of the Blue Line was shut down along its westernmost stretch Friday morning, for a report of a suspicious package that turned out to be a false alarm.
'Butt Dial' Blamed For Error That Sent SWAT TeamIt turns out that a false alarm at a Winnetka school that prompted a SWAT team response was actually the result of a “butt dial.”
SWAT Sent To Winnetka School During 'False Alarm'A "false alarm" sent a SWAT team to North Shore school Monday evening after the wife of a school employee called police thinking her husband was being held hostage by a man with a gun.

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