KELSO, Wash. --
Police said a Coweeman Middle School student was arrested Tuesday on suspicion of having explosives and a weapon on school grounds.
Kelso officers said the student was in possession of a homemade explosive that contained a small amount of black powder. The student also had a knife, police said.
The boy was arrested, officers said, and they said there was no indication he intended to harm other students.
Police did not release further details.
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