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Assistant Principal Nerissa Lee, 46, was fatally shot outside Lincoln Middle School in Berwyn, Ill., on Tuesday, Sept. 16

Her husband opened fire into her vehicle outside the school, killing both Lee and her mother before shooting himself, according to police and local outlets

About 100 students were locked down inside the building after hearing gunshots. No students were injured, and classes resumed on Thursday, Sept. 18

The husband of an Illinois assistant principal showed up outside her middle school on Tuesday, Sept. 16, fatally shooting her and her mother before turning the gun on himself, according to police.

Officers were already nearby around 4 p.m. when gunfire erupted outside Lincoln Middle School, per a Berwyn Police Department press release . A man was seen

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