Maine West High School lockdown prompted by false 'active shooter' alarm, district says

DES PLAINES, Ill. (WLS) — A north suburban high school has been evacuated after the “active shooter” alarm went off accidentally, the school district said.

Police are on the scene at Maine West High School in Des Plaines, but they have not identified a threat, Maine Township High School District 207 said in a statement.

The district said it believes either someone accidentally pushed the button, or there was a short in the system that caused the alarm to go off. That alarm caused a lockdown at the school.

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Still, the school is on lockdown “to keep students and staff safe” and to keep in line with protocol, the district said.

Chopper 7HD was over the scene, where students were being escorted out of the school.

The district said parents should not come to school.

This is a developing story. Check back with ABC7 for updates.