The Bristol post office and adjoining area have been evacuated as a precaution.
Emergency crews in Johnson City say they are also investigating a similar situation at the post office on State of Franklin Road.
Crews were called out to the U.S. Forestry Service office in Unicoi County this morning.
We have also confirmed a suspicious package was found at the U. S. Forestry work center in Greeneville on the Asheville Highway.
News 5 WCYB has a crew working following the investigations and will have more throughout the morning.