By Bria Brown

NEWAYGO, Mich. (AP) — A student lit a firework inside a western Michigan classroom Monday, injuring himself through a “serious lack of judgment,” an official said.

No other injuries were reported at Newaygo High School. Details about the student’s injury were not immediately disclosed.

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“This was not somebody planting an explosive device in order to hurt our students,” Superintendent Peg Mathis said on Facebook.

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Students were sent home because of the odor and smoke.

“A high school student brought some type of firework device to school,” Mathis said. “He lit it in a classroom which caused an explosion. It has been reported that this was not an attack or designed to be something malicious, but a serious lack of judgment.”

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