Lockdown Lifted At East County School After 'Unfounded' Threat

SPRING VALLEY, CA — A lockdown was lifted Thursday at an East County school after a threat was deemed unfounded, authorities said.

Mount Miguel High School was placed on lockdown after deputies received a report of a possible discharge of a firearm heard near the campus in the 8000 block of Blossom Lane in Spring Valley, according to the San Diego County Sheriff's Office.

Deputies conducted a walkthrough of all buildings and areas of the school campus but found no weapon or evidence of a firearm being discharged, according to the sheriff's office. The lockdown was lifted a short time later.

"At this time, deputies are investigating the incident as a swatting call," the sheriff's office said. "There are no additional threats to the school or community."

Sheriff's officials reminded students to report any threats or violence to deputies or call the anonymous Crime Stoppers Student Speaking Out Tip Line at 858-580-8477 or the sheriff's office at 858-868-3200.