Tulare Police immediately evacuated the building and set up a perimeter in the surrounding area to keep everyone safe.
They then called in the help of the Tulare County Sheriff's Office, which provided a K9 to search the building.
Some human officers then did a secondary search of the building.
Authorities say they did find a suspicious item in some bushes outside, but a bomb technician determined it was not a threat.
And at this point, there's nothing linking that item to the letter.
I also spoke with a city employee who says some staff were sent home earlier, and they were given the option to come back to work when the all clear was given.
Just for some perspective, between forty and fifty people work here and were evacuated.
Certainly an interruption, but of course they're grateful there was no credible threat.