A 17-year-old former Peotone High School student was arrested Monday night, accused of threatening to bomb the school.

Kyle Koran, of Monee, is being charged as an adult for a threatening message he posted on Twitter.

Peotone Police said Koran, who was being home schooled this year, deleted the message, but not before police saw it online shortly after 7 p.m. Monday. Police said the boy called it a joke.

Police searched Koran's home but found no evidence of bombs or weapons.

School officials were notified and Peotone police had extra officers on campus Tuesday.

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