Recorder's Norwalk headquarters received a bomb threat on Saturday — the latest in a string of threats targeting election hubs across the region and country.

Election offices in Orange and Riverside counties were evacuated after each received bomb threats. No explosives were found in either building. Both threats were sent via email, authorities said. ABC News is reporting that these same types of threats have been happening at offices across the country.

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.

A bomb threat at the Santa Clara County Registrar of Voters office on Saturday prompted an evacuation of the building and temporarily halted the election vote count.

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

As ballots continue to be counted, closely watched races continue to flip, including one in Orange County and another in Los Angeles County -- the 45th and 27th Congressional Districts, respectively,

A bomb threat caused officials to evacuate the Santa Clara County Registrar of Voters Office in San Jose on Saturday morning, NBC Bay Area reported. The bomb threat was “communicated to” the registrar’s main facility on Berger Drive in North San Jose about 8 a.