A security sweep of four San Diego-area schools found no evidence of a threat, one principal confirmed Monday.
On Friday, the San Diego Unified School District received an email to a generic district account that suggested a bomb was placed at Thurgood Marshall Middle School, Lewis Middle School, Lincoln High School and Magnolia Science Academy.
The schools were placed on lockdown. No device was found and no one was injured.
All four schools that were named were searched before classes Monday morning as a precaution. Nothing was found.
School police, the SDPD and the FBI are still investigating who sent in the anonymous bomb threat.
