The County Clerk's Office in Barre, Vermont, had to be evacuated on Wednesday after a suspicious envelope with white powder and a note was discovered.
The envelope was found at 3:55 p.m.
Police said the note indicated that the powder was Anthrax.
As a precaution, the hazmat team was called in to test the substance which was deemed to be foot powder.
Authorities said the envelope was marked as an inmate correspondence from Delaware and believed to be from a Vermont inmate held out of state.