Powder Panic Hits Election Offices

Weeks before Americans vote, federal agents are probing suspicious white-powder letters sent to election and congressional offices across several states.

Story Highlights

The Federal Bureau of Investigation (FBI) confirmed a nationwide probe into suspicious mailings tied to election and congressional offices.
State officials reported evacuations and intercepted letters containing an unknown white powder in Louisiana, Oklahoma, and Ohio.
The U.S. Postal Inspection Service and U.S. Capitol Police joined the investigation and issued handling guidance.
Authorities have not identified a sender, motive, or the substance, and have not released an official letter count.

Federal Investigation Into Suspicious Mailings

The Federal Bureau of Investigation said it is investigating a series of suspicious mailings sent to addresses nationwide, including Secretary of State offices and related election offices. Officials said some letters contained an unknown substance. The timing comes just weeks before the November elections. The FBI did not provide a total number of letters. The agency said it is working to identify those responsible and asked the public to follow mail safety guidance from local authorities and election offices.

The U.S. Postal Inspection Service confirmed that inspectors are working with the FBI. Postal officials said some letters were intercepted before delivery. The U.S. Capitol Police also acknowledged involvement after suspicious mail reached congressional offices. Security teams on Capitol Hill advised staff to treat such letters as potentially hazardous and to contact authorities immediately. The interagency approach reflects the roles each group plays in mail screening, criminal probes, and facility protection.

State Offices Report Evacuations And Intercepts

Louisiana Secretary of State Nancy Landry said her Baton Rouge office was evacuated after an employee discovered white powder in a letter. Oklahoma election official Paul Ziriax reported a similar evacuation in his state. Ohio Secretary of State Frank LaRose said the United States Postal Service intercepted a letter with a powdery white substance intended for his office. Officials said staff followed emergency procedures and resumed operations after safety checks cleared facilities.

Local reports tied the mailings to a broader set of incidents targeting election infrastructure. Some state offices increased screening of incoming mail and reminded employees to avoid handling suspicious envelopes. Guidance focused on isolating items, washing hands, and calling law enforcement. Officials did not confirm any injuries linked to the mailings. Law enforcement urged caution and patience as testing and tracing procedures continued across multiple jurisdictions.

Congressional Offices Receive Precautionary Alerts

The Senate Sergeant at Arms circulated a notice warning that suspicious substances had been sent to congressional offices. The House Sergeant at Arms sent a similar alert describing suspicious white powder and directing staff to report flagged letters. The guidance told offices to treat such mail as potentially hazardous until cleared by professionals. Those steps are standard after past hoaxes and real attacks involving the mail stream, which require quick isolation and expert testing.

NBC News reported that preliminary testing indicated the substance in some letters was not hazardous, citing three law enforcement sources. Officials still cautioned that the investigation was ongoing and that final laboratory results and forensic work would drive next steps. Agencies did not announce a suspect, a shared origin point, or a single coordinated campaign linking all letters. Without a public count or lab report, authorities kept the focus on safety and chain-of-custody protocols.

Why This Matters For Voters And Institutions

Threats and harassment of election workers have risen in recent years, prompting new training and security steps. Surveys by research groups and news outlets found sizable shares of local election officials reporting threats or abuse while doing their jobs. That background helps explain the fast, visible response to suspicious white-powder letters right before voting. Safety actions aim to prevent harm and reduce disruption, even if substances later test as nonhazardous.

Federal agencies are investigating after several congressional and state election offices across the country received mail containing suspicious substances, according to officials. https://t.co/Jpmxw037e5

— FOX 29 (@FOX29philly) October 16, 2026

Twenty-five years after the 2001 anthrax attacks, officials remain alert to powder letters because even hoaxes can shut down offices and sow fear. The National Postal Museum’s public record notes that anthrax letters killed five people and sickened others, and that copycat mailings followed. Today’s investigation reflects lessons learned since then: isolate the item, protect staff, test quickly, and coordinate across agencies. That approach aims to keep elections running while protecting workers and the public.

What To Watch Next

Watch for the FBI to release the substance identification once lab testing is complete. Look for the U.S. Postal Inspection Service to detail where letters were intercepted and how screening adapted. Monitor updates from the U.S. Capitol Police and congressional offices on any added mail controls. State election offices may share changes to intake procedures. Officials have not released a total letter count or a motive, so verified updates will likely arrive in measured steps as evidence firms up.