MINNEAPOLIS (WCCO/AP) — Two teenagers who are accused of assisting, possibly unknowingly, a Waseca teenager in his plot to kill his family and set off explosives at his school have pleaded guilty.

John LaDue was arrested last April after authorities said they found bomb-making materials in a storage locker in Waseca.

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The two other 18-year-old defendants pleaded guilty to possessing explosive material. They were accused of helping LaDue detonate small test bombs around Waseca, resulting in property damage.

Police and prosecutors don’t believe the two teens were aware of La Due’s larger plot.

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A judge in July dismissed four counts of attempted murder and two counts of attempted damage to property against LaDue, who was 17 when he was arrested and is now 18. The judge allowed six counts of possession of explosives to stand.

Judges now have three months to decide whether or not the attempted murder charges will be reinstated.

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