IDAHO FALLS, Idaho — An eastern Idaho junior high school student who was taken into custody after allegedly compiling a list of students and police officers he planned to kill, and gathering weapons for that purpose, had been bullied at school and online, authorities said.
‘‘This is a juvenile reacting to that bullying, trying to take matters into his own hands,’’ said Robin Dunn, Jefferson County prosecutor.
The boy appeared in juvenile court Wednesday facing a charge of misdemeanor battery stemming from a fight at the school Monday. Police said bullying led to the fight started by the boy. No charges have been filed based on the list or weapons.
The boy’s parents called police Monday evening after finding a list he made. Police found a bag containing guns, ammunition, and knives. Investigators believe no one else was involved in planning the possible attack.
Keith Hammon, Rigby’s police chief, said a police officer was looking into reports of bullying at the school before the parents reported their concerns. ‘‘The officer felt that there was more to what was going on with this young man and decided he needed to be evaluated,’’ Hammon said.
The school sent a text message alert to parents and students at about 3:50 p.m. Tuesday about the list, said Jefferson Joint School District Superintendent Ron Tolman.
The boy was being held at the St. Anthony Five County Detention and Youth Rehabilitation Center, where authorities said he was undergoing mental health evaluations and treatment.