NEWAYGO, Mich. (AP) — A 16-year-old student who lost both thumbs after his homemade explosive went off in a high school classroom in western Michigan has been charged.

The Newaygo County prosecutor's office says a preliminary hearing for the teen was held Wednesday.

He is charged with manufacture/possession of a Molotov cocktail or similar device and possession of a weapon in a weapon-free school zone.

Police said a homemade explosive was taken March 8 to Newaygo High School and accidentally detonated.

The teen, four other students and a teacher were hurt. His father later was charged with contributing to the delinquency of a minor and manufacture or possession of a Molotov cocktail after police searched his home.

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