Two Southern California schools that received threats held classes Thursday with more police officers on their campuses.
School staffers were searching book bags at Manhattan Beach's Mira Costa High School Thursday morning in the first day back in session following a bomb threat Monday.
A female student from another school district was arrested Wednesday who school administrators say made at least one of the threats online that shuttered Mira Costa.
At Fontana High School, near San Bernardino, an anonymous bomb threat reported Wednesday night didn't stop school from opening Thursday, school district officials said.
But precautions included a campus sweep and leaving explosive-sniffing dogs to check for bombs overnight.
In both cases, officials said the heightened security at school was necessary to protect students.
One Mira Costa student, Victor Pineschi, said he understood the need to react to threats, but called the police presence an inconvenience.
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"We've got police everywhere now, you gotta search the bags, it just kinda sucks," Pineschi said.
