A Cinnaminson High School student was arrested yesterday after a bomb threat and charged with causing a false public alarm and making terroristic threats, police said. It was the second time in less than a week that a bomb threat caused an evacuation at the school.

Students were sent home around noon yesterday after a teacher found a note in a boys' bathroom saying there was a bomb in the building, police said. Bomb-sniffing dogs searched the school but no device was found. Police arrested a 16-year-old sophomore, charged him, and released him to his parents.

On Friday, a 15-year-old freshman was charged after he allegedly left a bomb threat in the same boys' bathroom, police said. The school's Web site said the school would reopen today on time. - Sam Wood