NEWARK, Del. (WPVI) -- A smoke device was set off on Thursday afternoon inside the cafeteria of Newark Charter High School in Delaware.
Video of the incident was sent in by an Action News viewer.
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Police said on Friday that a student, 18-year-old Logan Jones, was arrested for allegedly setting off the device.
He was charged with one count of disorderly conduct.
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About 400 students were evacuated from the cafeteria by school staff.
No injuries were reported.