Police say school staffers were alerted by the parents of the 15-year-old suspect's friend on Tuesday afternoon.
According to investigators, the suspect showed what appeared to be a handgun to other students in the cafeteria, and allegedly threatened to shoot a student during an argument.
Officers searched his home and found a BB gun. The student was taken into custody.
Police believe that BB gun was the weapon seen on school grounds.
The student was charged with: carrying a concealed deadly weapon, possession of a weapon in a school safety zone, and terroristic threatening.
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