Lt. Tony Gutierrez with the San Diego Community College District police department said a man with an accent called the schools and said, "Everyone is going to die." Police were lead to believe a bomb was possibly a part of the threat.
Menacing calls were received about 9 a.m. at Sherman Elementary School on 22nd Street and Curie Elementary School on Governor Drive, according to San Diego Unified School District officials.
Staffers at both schools notified police, and students were evacuated to a safe place on campus as officers and service dogs were summoned to comb the grounds and buildings for hazards. The searches were complete and the security alerts lifted by 10:45 a.m., after which classes resumed, district spokeswoman Linda Zintz said.
A third bomb threat, meanwhile, was directed at San Diego Early/Middle College on the grounds of San Diego City College on Park Boulevard. The SDUSD school and another building were evacuated.
School police conducted a security sweep of the downtown campus and lifted the lockdown shortly after noon, according to district officials.
No explosives or other types of hazards were found at any of the schools, the spokeswoman said.
Police believe the same person was responsible for all three threats. At this point they are working to find out who the caller was.