PALO ALTO, Calif. (KRON) — A bomb threat scrawled on a bathroom stall at Palo Alto middle school on Tuesday has been deemed “not credible” by investigators, according to the Palo Alto Police Department.

PAPD said that at 11:24 a.m. on Tuesday, it received a call from Jane Lathrop Middle School, located at 480 East Meadow Drive, about a “suspicious circumstance.” A student found writing on a stall in the girls’ bathroom indicating that the writer planned to bomb the school on Wednesday, according to police. The student immediately reported the threat to school staff, who then told police.

Officers were on site at school on Wednesday to ensure the safety of students and staff members. An investigation into the bomb threat written on the wall led police to suspect a student at the school.

The police worked with school administrators and district officials to determine that the threat was not credible. The incident will be “handled internally as an administrative matter,” according to PAPD.

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Police went on to praise the actions of the student who came forward and the others who cooperated with the investigation. “The actions of all these students are consistent with the common mantra of ‘If you see something, say something,’ and directly contributed to maintaining a safe environment at the school for their classmates and staff alike,” PAPD said.