Hacienda Heights school locked down after possible weapon threat

Los Altos High School in Hacienda Heights was placed on lockdown Wednesday after a person overheard a conversation in a bathroom that suggested someone might be carrying a loaded gun on campus.

The potential threat was reported to school officials shortly before 9 a.m. and the campus at 15235 E. Los Robles Avenue was immediately locked down.

Hacienda-La Puente Unified school police combed the campus aided by sheriff's deputies.

Students were directed to "shelter in place" in their classrooms.

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-- Richard Winton