A Waltham High School security guard admitted stealing bomb-making materials found in his car from the school’s chemistry storage room, Leominster police Sergeant Ryan Malatos said. Jesse Holland, 23, of Gardner, was arrested early Wednesday in the Barnes & Noble parking lot on North Main Street after police found a hatchet, stun gun, and a Class A substance in his car. Holland said he planned to throw the materials into a fire to see what would happen, police said. The State Police bomb squad confirmed the materials can be used to create an explosive.
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