Packages containing unidentified substances have been turning up at congressional and election offices around the country, prompting a coordinated response from federal law enforcement. Three federal bodies — the FBI, the US Postal Inspection Service, and the US Capitol Police — are jointly overseeing the investigation, with agents advising those who received the materials to treat them as potential health or safety hazards.
Details of the inquiry reached the public through a notification sent by the Senate Sergeant at Arms. A notice distributed to Senate offices advised that law enforcement personnel were actively working to intercept further mailings, while acknowledging that some pieces of correspondence might still reach their intended recipients. The FBI, in a statement passed to a news outlet, indicated that an unidentified substance had been found in a portion of the letters and that coordination with partner agencies was underway both to address each reported incident and to determine who was behind the mailings, though the bureau stopped short of confirming particular letters or cases — a point that stood in contrast to accounts from multiple Democratic senators who said they had received suspicious mail.
Aides for both of Delaware's Democratic senators — Lisa Blunt Rochester and Chris Coons — confirmed that their respective offices had received letters flagged as suspicious. Senator Alex Padilla disclosed that postal workers had flagged and held back a package bound for his California Senate office after it raised security concerns. Postal inspectors caught a piece of mail addressed to Senator Kirsten Gillibrand's New York City office that they deemed worth flagging, the senator disclosed.
Reports from a broadcast outlet indicated that Connecticut Senator Chris Murphy's office had also received a letter containing an unidentified substance. Spokesman Josh Sorbe noted that the FBI, the Senate Sergeant at Arms, and Capitol Police had all notified the office promptly, that cooperation with those agencies and federal law enforcement was continuing, and that the senator and his staff had faced no immediate risk as a result of the safety protocols in place. The threat, according to an individual familiar with the matter who lacked authorisation to speak publicly about the investigation, appeared confined to the Senate side of the Capitol, though the House was monitoring developments.
Suspicious envelopes containing a powder that could not be identified led election offices in Louisiana and Oklahoma — and possibly other states — to evacuate their buildings during the early part of the week. Packages containing white powder turned up at election offices in multiple states, with one such item stopped by postal workers before it could reach the Ohio Secretary of State. Election offices across a wide band of states — stretching from Idaho through to Florida — reported that threatening correspondence either reached their facilities directly or was intercepted before delivery by postal workers.
The Wisconsin Elections Commission disclosed via a statement that a letter it had received contained a white powder, which testing determined posed no health threat. Elections administrator Meagan Wolfe stated that the episode would not alter the commission's operations.
Occurring approximately three weeks before Election Day, the mailings drew comparisons from observers to a 2023 episode in which envelopes containing a white powder were discovered at election offices across six states. Ballot-related activity in affected areas was thrown off schedule when a number of these episodes overlapped with election periods. Naloxone, a medication used to reverse overdoses, was placed on hand at a number of voting administration offices after incoming mail turned up carrying both threats and traces of fentanyl.
Two election-administration bodies — the National Association of Secretaries of State and the National Association of State Election Directors — issued a joint statement addressing reported threats against personnel who run elections, calling for those workers to be free from personal safety concerns while performing their official duties. Deputy Postal Inspector Brendan Donahue conveyed to members of the press that threats or attacks directed at election officials fall outside what authorities consider acceptable, and that partner agencies are jointly engaged in tracing whoever sent the letters.
