A trio of Democratic senators was sent letters containing “suspicious substances,” including Senate Minority Leader Chuck Schumer (D-NY), amid a warning that similar letters have been sent to addresses nationwide.
The suspicious letters intended for Schumer and Sens. Chris Murphy (D-Conn.) and Alex Padilla (D-Calif.) were intercepted before they reached the lawmakers, and federal authorities are investigating the matter.
SUSPICIOUS MAILING: Federal authorities investigate a coordinated wave of suspicious letters mailed to congressional and election offices across the country. Law enforcement and postal inspectors are urging recipients to treat the envelopes as potentially hazardous after powdery substances triggered office evacuations in several states. Officials note the letters are reminiscent of previous security threats as election administrators prepare for upcoming midterms.
— Special Report (@SpecialReport) October 15, 2026
According to a report from ABC News, a Thursday notice sent to Senate staff said that the Capitol Police, the FBI and the U.S. Postal Inspection Service are investigating “multiple letters containing suspicious substances that were mailed to various addresses nationwide, including multiple Congressional offices.”
It is unclear how many letters have been sent out. The letters are circulating less than three weeks before the midterm elections.
Murphy spokesman Josh Sorbe confirmed to Fox News Digital that the Connecticut Democrat’s office “was sent a letter with a suspicious substance.”
“Our office was promptly informed of the letter by FBI, SAA, and Capitol Police, and we continue to work closely with them and federal law enforcement,” Sorbe added. “Due to those efforts and various safety protocols, the Senator and staff were not in immediate danger. Our office is grateful for the investigators involved in this incident, and we intend to continue close coordination as the investigation continues.”
“We received the notification from the FBI that one of our offices was mailed a letter containing a suspicious substance, but it was intercepted by USPS,” a Padilla spokesperson told Fox News Digital.
“Law enforcement officials are working to intercept any additional letters before they are delivered, however, it is possible that some letters may reach their destinations,” the Senate Sergeant at Arms said in a notice.
At least one of the letters had a return address linked to the far-left Democratic Socialists of America.
NEW @scrippsnews: Here’s an image of one of the letters sent to multiple Congressional Offices containing “suspicious substances” now under investigation by the Postal Inspection Service, FBI, and Capitol Police.
The investigation & letters were first reported by Punchbowl News https://t.co/xQLJ3pZtEm
— Nathaniel Reed (@ReedReports) October 15, 2026
“DSA has not occupied this office address since 2013,” a DSA representative said in a statement, according to the New York Post. “We are also no longer headquartered at 75 Maiden Lane.”
Suspicious letters were also sent to election offices in multiple states.
“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,” an FBI spokesperson said in a statement.
“Some of the letters contained an unknown substance and we are working closely with our law enforcement partners to respond to each incident. We are also working with our partners to identify the individual or individuals responsible for the letters,” the spox added.
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