Hartford fire crews responded to investigate an envelope containing a white powdery substance at a building that houses state offices and determined it was just dust.
Crews responded to 410 Capitol Ave., which houses the Department of Public Health and the Department of Mental Health and Addiction Services, according to a sign on the building.
There they determined that the powder was dust from packing material and there is no cause for concern.
Officials from the Department of Mental Health and Addiction Services said the incident was not on a floor that their department occupies.
Fire officials said the scene was on “precautionary isolation” until they determined what the substance was.