An Oklahoma high school student is being held on charges he plotted to bomb and shoot students at the campus on the same day that 26 people were shot dead at an elementary school in Connecticut.
Police arrested 18-year-old Sammie Eaglebear Chavez at about 4.30am on Friday after learning of the alleged plot on Thursday regarding Bartlesville High School.
An arrest affidavit said Chavez tried to convince other students to help him lure students into the auditorium, chain the doors shut and start shooting.
The Tulsa World reports that authorities said Chavez threatened to kill students who did not help.
The Bartlesville Examiner-Enterprise reported Chavez planned to detonate bombs at the doors as police arrived.
The school district said students were never in danger. Chavez is being held on a $1m (€763,280) bond.