Three schools in San Diego’s North County were placed on lockdown Friday after a threat believed to be unfounded, Oceanside police said.
The threat was made at Jefferson High School around 11:15 a.m., according to Oceanside Police spokeswoman Jennifer Atenza, prompting police to conduct a room-by-room search of the school.
During the investigation, students at the high school and nearby Burgener Elementary School and Mission High School were placed on lockdown. At 12:15 p.m., all students were safe and cared for, Atenza said.
Within an hour, the cleanup was complete and no threat was found, Oceanside police said.
“To reassure our school staff, students, parents and community, officers will remain in the area,” Oceanside Police said.
Atenza said there has been an increase in such calls in schools across the district and the country.
In September, several hoax calls were reported at schools across the country, including at least one in San Diego County. Mater Dei Catholic High School in Chula Vista is on lockdown due to a school shooting hoax believed to have come from out of state.