Suspicious Mailings Spread Across States, but Their Reach Remains Unclear

Federal authorities were investigating suspicious mail sent to congressional offices and election officials in multiple states on October 15, less than three weeks before Election Day. The FBI, U.S. Capitol Police and U.S. Postal Inspection Service were involved and were working to intercept additional letters.

The reports leave key details unresolved: they do not establish who sent the mail or how many letters reached their intended recipients. NBC reported that election offices in at least 15 states said they had been mailed suspicious packages.

In Connecticut, the offices of Senators Chris Murphy and Richard Blumenthal were among those affected. Murphy’s office said its letter was intercepted, illustrating that a mailing directed at an office did not necessarily reach it.

Testing reported so far has not confirmed a hazardous substance. NBC said preliminary tests found the white powder was not hazardous, with further testing still to come. The New York Times reported that letters tested by Senate officials had tested negative for hazardous substances.

The gap between the reported spread of the mailings and what is known about their impact matters for offices responsible for both governing and administering elections. The incident has required coordination among federal investigators and raised practical questions about screening and response, but the available reports do not describe what protective protocols affected election offices used.

The sender, motive, total number of letters and final test results remain unknown. Authorities’ effort to intercept additional mail shows the investigation was still active; it does not establish how many letters were stopped or delivered.