An Oregon teen is being charged as an adult in a plot to attack his school that was allegedly “forged and inspired by the model of the Columbine shootings,” prosecutors said Saturday. Grant Acord, 17, also faces six counts of manufacturing and possessing a destructive device after police found six bombs in a secret compartment of his room. Benton County District Attorney John Haroldson said Acord had written plans, a checklist, and a specific timeline for the attack, although no bombs were found at Acord’s high school. Police arrested Acord on Thursday after receiving a tip about his plans. He is being held at a juvenile facility is likely to be arraigned on Tuesday.