A student at Foothill High School in Henderson was arrested on Aug. 12, the day before school started.
According to school police, the male student made threats online. The threats were reported through SafeVoice, a new anonymous reporting system that people can use to report threats to schools or students.
He was taken into custody on Sunday for making terroristic threats.
Another threat towards Foothill High School was also investigated but that threat did not result in an arrest.
A student was also arrested at Green Valley High School in Henderson on Aug. 13 for bringing a loaded gun to school.