The San Diego County Registrar of Voters received a bomb threat at its office in Kearny Mesa, officials said Saturday.

The San Diego Registrar of Voters received a bomb threat early Friday, prompting a full-scale investigation, the county communications office confirmed.

Registrars of voters' offices in Orange and Riverside counties were evacuated Friday evening after receiving bomb threats, but no explosives were located at either site.

Deputies evacuated the Orange County Registrar of Voters after it received a bomb threat at its Santa Ana office.

Authorities said the voter registration offices of Orange and Riverside counties were evacuated Friday after each received a bomb threat. According to Elizabeth Florer, public information for the Riverside County Registrar of Voters,

Orange County’s elections office, where ballots were being counted, received a bomb threat Friday afternoon, the registrar said. Staff and members of the public who were watching ballots being tallied were evacuated from the Santa Ana building at about 6:45 p.