Police responded to threats at about a dozen schools in a single day last month, and on February 21, both Walter Johnson and Winston Churchill high schools were evacuated for bomb threats that police later determined were unfounded.
Two teens were taken into custody by state police Tuesday after each of them allegedly threatened to "shoot up the school" at two separate schools in the Warren County School District.
If the device had detonated, it would have caused significant injury or death, St. George police said.
More charges are expected for the vandalism at Hurricane High School, where he destroyed an Americans flag and spray painted "ISIS is coming" on the school's exterior, police said.
The teen who was arrested was attending class at the school, St. George police said. Oakmont High School received similar information and reported it to Roseville police.
No one was hurt Monday after the backpack was found in a common area of the school by a student who reported it to a teacher.
'A warrant was served on the residence of that juvenile and items were located that were consistent with the material used to build the device placed at Pine View, ' police said. "We've had additional officers throughout all of our schools".
Within the last month, four other people have been arrested for making threats to Merced County schools, according to Sun-Star archives.
The police department said the officer acted quickly, though, and thanked the officer and the program that funds officers in schools. In this representational image, members of the riot police arrest a young man following clashes with demonstrators during a protest against police brutality, following the alleged rape of a black man in Paris, Feb. 23, 2017.
The school was immediately evacuated and the Washington County bomb squad was called to detonate the device, officials said.
"In these cases Chico Police responds through open communication between the school, parents and police to determine if there is an immediate threat and access to weapons", said Love.