A 13-year-old Washington boy allegedly “obsessed” with past school shooters was arrested after police found a stockpile of guns, boxes of ammunition, and chilling writings suggesting he was plotting his own killing spree.

The teen suspect, who has not been identified, was taken into custody after police raided his Tacoma home at 1 a.m. upon receiving numerous tips he had “school shooter ideations,” made lethal threats, and bragged about his access to firearms, according to the Pierce County Sheriff’s Office.

Police seized 23 guns — some reportedly homemade with a 3D-printer — along with loaded magazines scrawled with “school shooter” writings and menacing clothing tied to a mass shooting incident. 4

“It appeared the suspect had everything ready to go to commit a mass shooting type

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