Federal authorities are investigating a series of letters containing suspicious substances that have been sent to congressional offices and election-related locations across the United States. The FBI, U.S. Postal Inspection Service, and U.S. Capitol Police are jointly managing the inquiry and have urged recipients to treat the mailings as potentially hazardous.
The investigation was confirmed in a communication from the Senate sergeant at arms, which warned Senate offices that while officials were attempting to intercept any further letters, some might still reach their destinations. Although the immediate congressional threat has primarily involved the Senate, the House of Representatives is also monitoring the situation.
The FBI issued a statement confirming that the suspicious mailings were sent to various addresses nationwide, including offices of secretaries of state and related election entities. Some of these letters contained unidentified substances, prompting a coordinated response from federal law enforcement agencies to address each incident and identify those responsible.
Several states have reported related disruptions this week. Election offices in Louisiana and Oklahoma were evacuated after packages containing a powdery material were received. In Ohio, officials confirmed that a package with a white powder was intercepted by the Postal Service before reaching the secretary of state’s office. Similar mailings were reportedly intercepted in Maryland, Mississippi, and South Dakota as well.
These incidents occur just weeks ahead of the November elections, raising concerns about attempts to intimidate or disrupt election processes. The situation recalls a similar event in 2023 when election offices across six states received mailings containing a white powder, resulting in operational interruptions in some areas.
Authorities continue to investigate the scope and source of the mailings and have urged all recipients of suspicious packages to exercise caution and report the contents to law enforcement.