Classmates of the suspect thwarted the alleged bombing attempt Monday at Pine View High School in St. George, Utah, when they spotted smoke coming from the backpack and alerted a school resource officer, according to the Washington County Sheriff's Office.
"After examining the device, bomb squad members indicated that if it had detonated; the device had the potential to cause significant injury or death", The St. George Police Department wrote in a statement.
The suspect was arrested Tuesday morning and will face charges of manufacture, possession, sale, use or attempted use of a weapon of mass destruction, and maybe more, police said.
A search warrant served at the home of the suspect uncovered a number of materials.More news: Eagles trading for DE Michael Bennett
"Their immediate action played a large role in this incident ending with no injuries", the St. George Police Department said.
The police department hailed the students who notified faculty of the smoking backpack.
Chief Dave Riviere released few details and declined to describe the specific nature of the treats or say how it was discovered by police.
Citing an ongoing investigation, police would not discuss the nature of the student's threat. "[We] appreciate the cooperation of all students and staff in keeping this incident from interrupting the learning environment today".More news: Teen Breaks Retainer Thirsting After Shirtless Michael B. Jordan; Actor Responds
The juvenile was expected to be arraigned Tuesday at Wareham District Court on the following criminal offenses: bomb/weapons threat (MGL 269 S14), disturbing a school assembly.
"It was an explosive device that was homemade". The school has about 500 students in a town of fewer than 8,000 residents.
Cynthia Brandt-Campagna, president of the Albert Einstein High School Parent-Teacher-Student Association, said all threats, even empty ones, generate fear and cost time and energy.
Investigators said someone found two threatening notes at the school near 21st Street and 67th East Avenue.More news: The World's Richest Arabs 2018