Security was increased Monday at the San Diego County Administration Center after a threat was issued last week against staffers at the county's main facility.
The San Diego County Sheriff's Department (SDSO) was alerted to a potential threat made by a former county employee against unknown staff within the center Friday afternoon.
The subject of the potential threat was identified and interviewed, and SDSO detectives "took appropriate action to minimize the threat," a statement from the department read in part.
The identity of the suspect will not be released due to the former staff member's mental health status, SDSO said.
An email alert was sent to all county employees at around 3:09 p.m. advising them of the threat.
The letter said that the Sheriff's Department and the District Attorney's Office are "working closely on every legal means possible to prevent this individual from accessing County facilities."
The center put additional security in place Monday. One employee told NBC 7 that security checks usually include consist of simple badge checks, but Monday was different.
“They were looking at the badges physically, looking at the picture, then looking at you making sure it was you.” Cynthia Salazar said. She said she also noticed more deputies in the building.
In the email alert, employees at the Center were asked to remain vigilant.
Another employee, who did not wish to be identified, told NBC 7 that she wishes the county had given employees more details about the threat, like whether it was bomb or shooting related. Then, she said, she would have known what to look out for.