FBI probes white powder letters mailed to Capitol Hill and state election offices before midterms

 October 16, 2026

Federal investigators are chasing a wave of letters packed with unknown white powder mailed to Capitol Hill and state election offices nationwide, intimidation aimed at the machinery of the vote just ahead of the midterms.

Authorities are investigating letters containing suspicious substances sent to multiple Capitol Hill offices, with more mailings reported to lawmakers’ state and district offices across the country. The FBI confirmed it is working the case with the U.S. Postal Inspection Service, focusing on Secretary of State offices and related election offices as well.

Some of the letters carried an unknown substance. Evacuations followed in at least two states. No injuries were reported in the accounts available, but the pattern is clear enough: someone is trying to scare the people who run elections and staff Congress.

The House Sergeant at Arms told staff to stay sharp on mail handling. A Senate Sergeant at Arms memo warned that law enforcement is trying to intercept more letters before delivery, though some may still get through. Capitol Police are in the mix alongside the FBI and postal inspectors.

Senate offices flagged as targets

Fox News reported that Capitol Police and the FBI told the offices of Sens. Chuck Schumer, Chris Murphy, and Alex Padilla they were intended recipients of letters with suspicious substances. Those letters were intercepted under post-anthrax screening rules before they reached desks.

A Murphy spokesperson said the office was promptly informed by the FBI, the Senate Sergeant at Arms, and Capitol Police, and that the senator and staff were not in immediate danger because of those protocols. The Senate-side threat picture has driven the sharpest Hill response so far.

The Washington Examiner detailed the same core investigation into letters with suspicious substances hitting multiple Capitol Hill offices, and the staff notices that followed. Lawmakers and aides are being told to treat incoming mail as a live risk, not a paperwork chore.

Hill security has faced real violence and plots in recent years, including a plot to kill a top Treasury official that ended in a multi-year sentence. Powder letters are a different tool, but the goal is the same: put fear into public servants and the institutions around them.

Louisiana and Oklahoma offices emptied

In Baton Rouge, an employee at the Louisiana secretary of state’s office discovered white powder inside a package around 12:20 p.m. The Elections Division was evacuated. Officials shut off the building’s air conditioning as a precaution.

In Oklahoma, the State Election Board office received an envelope with suspicious white powder on a Tuesday. The office was evacuated. Oklahoma Highway Patrol, the Oklahoma City Fire Department, and the Oklahoma National Guard all responded.

Incidents have been reported in Louisiana, Oklahoma, and Ohio. Exact counts of letters intercepted or delivered have not been released. Lab results identifying the powder have not been made public in the reporting so far.

Breitbart noted that U.S. Capitol Police are part of the probe and that the Senate Sergeant at Arms notice left open the chance some letters could still arrive. Evacuations and intercepts at election offices underline that this is not limited to one wing of the Capitol.

Political violence and credible threats keep testing federal response. The FBI’s arrest of a Los Angeles man over alleged threats to kill President Trump is a reminder that words and packages both get treated as potential crimes when the target is a public official.

Election officials refuse to stand down

Ohio Secretary of State Frank LaRose condemned the threats and tied them straight to the duty of running clean elections.

"We have a duty to the citizens of Ohio to deliver secure and accessible elections, and these kinds of cowardly threats will not deter us from that mission."

The National Association of Secretaries of State and the National Association of State Election Directors issued a joint statement rejecting intimidation of the people who administer ballots and certify results.

"Those who administer our elections should never fear for their safety while carrying out their essential duties."

The groups said election officials are working with law enforcement and security partners to protect staff and facilities, and that offices already have security measures and contingency plans so operations can continue.

The FBI put the national scope in plain language.

"The FBI and U.S. Postal Inspection Service are investigating a series of suspicious mailings sent to various addresses nationwide, including Secretary of State offices and their related election offices. Some of the letters contained an unknown substance and we are working closely with our law enforcement partners to respond to each incident."

House guidance struck a similar note. The House Sergeant at Arms urged staff to “remain vigilant and follow safe mail handling procedures to help protect staff from potentially harmful materials.”

Threats against members of Congress have produced wildly uneven outcomes in other cases, including a trans activist who threatened Rep. Nancy Mace and received house arrest instead of prison. Election workers and Hill staff deserve consistent, serious enforcement when someone mails powder or issues a kill threat.

Screening protocols and a familiar scare pattern

Post-anthrax mail screening is why some of the Senate-bound letters never reached their desks. That system exists because powder letters have been used before to freeze offices and force hazmat responses.

A 2013 scare at Rep. Gregory Meeks’ Rayburn office showed how fast Capitol Police and HAZMAT move when powder turns up in the mail stack. Tests then came back negative and the area reopened in about two hours, but the disruption was real and the climate on the Hill was already raw after ricin letters aimed at national leaders.

Today’s notices follow the same logic: intercept what you can, warn staff about what you might miss, and treat every unknown powder as a potential hazard until lab work says otherwise. The Senate memo obtained by Politico made the residual risk explicit, interception is underway, delivery is still possible.

Capitol Police have also been pulled into tense Senate moments far from the mail room, including when officers stepped into a heated hearing involving senators and high-profile witnesses. Security on the Hill is not an abstract budget line. It is daily triage.

What remains unanswered

Officials have not released a full tally of letters sent, intercepted, or delivered. They have not named suspects or stated a motive. They have not published confirmed lab results on the powder. Ohio’s secretary of state spoke out forcefully; whether Ohio itself received a mailing is not spelled out in the same detail as Louisiana and Oklahoma.

The FBI says it is working to identify those responsible. That is the right priority. Election offices in Baton Rouge and Oklahoma City should not have to empty floors and kill the air conditioning because a stranger dropped powder in an envelope.

High-profile security failures still cast a long shadow. Fresh questions about the FBI’s handling of the Butler assassination attempt keep the pressure on federal agencies to move fast, share facts, and finish cases that target political life in America.

Midterms depend on ordinary workers opening mail, staffing offices, and keeping the process on schedule. Cowards with powder envelopes do not get a veto over that work, and they should not get a free pass when the trail leads back to them.