A student displayed a knife Friday during an argument with a staff member at Mira Mesa High School, prompting a roughly 30-minute campus lockdown that ended with the boy’s arrest. Photo via OnScene.TV.

A student displayed a knife Friday during an argument with a staff member at Mira Mesa High School, prompting a roughly 30-minute campus lockdown that ended with the boy’s arrest, authorities reported.

The weapon-related emergency at the northern San Diego secondary school was reported shortly before noon, according to police.

Following the confrontation, the boy fled, leaving the grounds of the school. Campus administrators directed students and staffers to remain secured in their classrooms and offices while police searched the area for the armed teen, whose name was withheld, Officer Tony Martinez said.

About 12:15 a.m., patrol personnel found the youth a short distance from the campus and took him into custody.  The lockdown was then lifted.

No injuries were reported, Martinez said.

—City News Service

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