There were no reports that the packages contained hazardous material, and the FBI and U.S. Postal Service confirmed they are investigating the incident, The Associated Press (AP) reported.
The Hill has reached out to both agencies for comment.
Packages with powder-like substances were sent to secretaries of states and election offices in Nebraska, Tennessee, Wyoming, Oklahoma and Iowa, the AP said.
In most cases, the substances have already been deemed harmless. In Oklahoma, officials determined the material sent to the election office contained flour. In Nebraska, the substance was tested and found to be nonhazardous.
Elsewhere, it was not yet clear whether testing of the material had concluded. In Iowa, protocol required that the entire six-story state office building be evacuated because of the substance. In Wyoming, workers near the state Capitol were sent home as the white substance sent to the secretary of state’s office was undergoing testing.
