Coverage dated October 14, 2026 to October 17, 2026

Authorities investigate letters with ‘suspicious substances’ sent to congressional, election offices

Headline from WSVN Miami, on the newest of 2 developments

WASHINGTON (AP) — Federal authorities are investigating letters with “suspicious substances” that have been mailed to congressional and election offices nationwide and are urging recipients...

WSVN Miami's own description from its feed. We collect headlines and these descriptions, not full articles; read the original reporting below.

Earlier updates in this story

Developments in this update

2 dated developments, oldest first, newest marked. Each is named by one outlet's own headline; open its reports to see every outlet that covered it.

  1. Multiple states report suspicious packages with white powder at election offices

    Headline from MyStateline ·

  2. Newest

    Authorities investigate letters with ‘suspicious substances’ sent to congressional, election offices

    Headline from WSVN Miami ·

5 reports not tied to one development ·

Read the reports

Reports & sources

127 articles, oldest first.

  1. Just the News

    'Suspicious' mail sent around country with return addresses linked to the DSA triggers investigation (opens Just the News)

    Published

    Just the News's feed description

    An image in the email showed one of the envelopes, which included a return address for the Democratic Socialists of America (DSA) headquarters. Though, it's not clear the DSA had any involvement in the letters.

  2. NBC News

    Suspicious white powder sent to election offices in 3 states (opens NBC News)

    Published

    NBC News's feed description

    No injuries or adverse health effects have been reported, and officials said they are working with state and federal law enforcement.

  3. UPI

    Suspicious white powder sent to election officials in three states (opens UPI)

    Published

    UPI's feed description

    Election officials in Ohio, Louisiana and Oklahoma said they were sent packages containing suspicious white powder, prompting law enforcement to investigate.

  4. KRDO

    Suspicious letters with white powder sent to election offices in multiple states (opens KRDO)

    Published

    KRDO's feed description

    By Sean Lyngaas, CNN (CNN) — Election offices in multiple states reported receiving suspicious letters in the mail this week containing a powdery white substance, prompting an investigation from the FBI and US Postal Inspection Service.

  5. NBC10 Philadelphia

    Suspicious mail containing white powdery substance sent to Del. election office (opens NBC10 Philadelphia)

    Published

    NBC10 Philadelphia's feed description

    An investigation was underway after a suspicious envelope was delivered to and opened at the Delaware Department of Elections’ State Election Commissioner’s Office Thursday afternoon, according to officials. Officials said that around 2 p.m. on Oct.

  6. Roll Call

    ‘Suspicious substances’ target senators on anniversary of attack (opens Roll Call)

    Published

    Roll Call's feed description

    Federal officials said the FBI is investigating a series of suspicious mailings. Above, sunrise illuminates the Capitol in September.

  7. The Hill

    Multiple states report suspicious packages with white powder at election offices (opens The Hill)

    Published

    The Hill's feed description

    Election officials in three states have reported suspicious packages were sent to their offices in the past week, only a few weeks out from the midterm elections. Ohio Secretary of State Frank LaRose said on Wednesday that U.S.

  8. New York Post

    FBI, Capitol Police probing letters ‘containing suspicious substances’ mailed with DSA-linked return address (opens New York Post)

    Published

    New York Post's feed description

    The FBI, US Postal Inspection Service and Capitol Police are investigating letters "containing suspicious substances" that were mailed to congressional offices, according to emails sent to Hill staff Thursday.

  9. Forbes

    Feds Investigating Suspicious Letters Mailed To Capitol Hill, Election Offices Nationwide (opens Forbes)

    Published

    Forbes's feed description

    Federal agencies are investigating suspicious, powdery letters mailed to addresses nationwide.

  10. FOX 5 DC

    FBI investigating suspicious letters sent to election offices nationwide (opens FOX 5 DC)

    Published

    FOX 5 DC's feed description

    Federal law enforcement officials are investigating a series of suspicious mailings sent to secretary of state offices and their related election offices across the country, according to the FBI and the U.S. Postal Inspection Service.

  11. WSVN Miami

    Authorities investigate letters with ‘suspicious substances’ sent to congressional, election offices (opens WSVN Miami)

    Published

    WSVN Miami's feed description

    WASHINGTON (AP) — Federal authorities are investigating letters with “suspicious substances” that have been mailed to congressional and election offices nationwide and are urging recipients...

  12. Fox News

    'Suspicious' mail with DSA-linked return address triggers FBI, Capitol Hill investigation (opens Fox News)

    Published

    Fox News's feed description

    Senior Capitol Hill staff were warned about suspicious letters containing unknown substances mailed to multiple congressional offices nationwide.

  13. ABC 11 Raleigh

    Feds investigating letters with 'suspicious substances' sent to multiple Congressional offices (opens ABC 11 Raleigh)

    Published

    ABC 11 Raleigh's feed description

    Several federal agencies are investigating "multiple letters containing suspicious substances," that were mailed nation wide, according to a notice sent to Senate staff.

  14. ABC News

    Feds investigating letters with 'suspicious substances' sent to congressional offices (opens ABC News)

    Published

    ABC News's feed description

    Several federal agencies are investigating "multiple letters containing suspicious substances," that were mailed nation wide, according to a notice sent to Senate staff.

  15. NBC News

    Federal authorities investigate suspicious mailings sent to congressional and secretary of state offices (opens NBC News)

    Published

    NBC News's feed description

    The FBI, U.S. Capitol Police and U.S.

  16. Townhall

  17. MS Now

    Law enforcement investigating suspicious letters sent to Congress, elections offices (opens MS Now)

    Published

    MS Now's feed description

    Federal authorities are probing the source of envelopes with “suspicious substances” that were mailed to multiple congressional and elections offices nationwide.

  18. CBS News

    Feds probing suspicious letters to election officials, lawmakers (opens CBS News)

    Published

    CBS News's feed description

    Federal investigators said they are looking into suspicious letters containing unknown substances that were mailed to state election officials and congressional offices.

  19. Bloomberg

    USPS Probes Suspicious Mail While Vowing to Deliver All Ballots (opens Bloomberg)

    Published

    Bloomberg's feed description

    The FBI and US Postal Service are investigating a series of suspicious mailings to state election officials across the country, some of which contain unknown substances, officials told reporters on Thursday.

  20. NOTUS

    Election Offices Have Received Letters Containing ‘Suspicious Substances’: Feds (opens NOTUS)

    Published

    NOTUS's feed description

    The FBI confirmed the mail was sent to state elections and congressional offices across the country.

  21. WOWK Charleston

    Ohio lawmaker reports suspicious package with white powder delivered to election office (opens WOWK Charleston)

    Published

    WOWK Charleston's feed description

    (The Hill) - Election officials in three states have reported that suspicious packages were sent to their offices in the past week, only a few weeks out from the midterm elections. Ohio Secretary of State Frank LaRose said on Wednesday that U.S.

  22. The Guardian

    FBI investigates letters with ‘unknown substance’ sent to US election officials (opens The Guardian)

    Published

    The Guardian's feed description

    Election officers in Louisiana and Oklahoma receive a powdery substance, prompting evacuations The FBI and the US Postal Inspection Service are investigating letters sent to state officials and election offices across the country containing an “unknown substance”.

  23. Capitol Fax

    Illinois elections board reports no suspicious mail as feds investigate nationwide (opens Capitol Fax)

    Published

    Capitol Fax's feed description

    * The Associated Press… Federal authorities are investigating letters with “suspicious substances” that have been mailed to congressional and election offices nationwide and are urging recipients to treat the mailings as “potentially hazardous.” The investigation by the FBI, U.S.

  24. Washington Examiner

    Suspicious packages sent to election and congressional offices ahead of midterm elections (opens Washington Examiner)

    Published

    Washington Examiner's feed description

    Authorities are investigating letters containing “suspicious substances” sent to multiple Capitol Hill offices, according to a notice distributed to congressional staff. The Senate Sergeant at Arms said law enforcement officials are working to intercept additional letters before they are delivered, …

  25. WHDH Boston

    Authorities investigate letters with ‘suspicious substances’ sent to congressional and election offices (opens WHDH Boston)

    Published

    WHDH Boston's feed description

    WASHINGTON (AP) — Federal authorities are investigating letters with “suspicious substances” that have been mailed to congressional and election offices nationwide and are urging recipients...

Showing the first 25 of 71 headlines. ·

Identical headlines usually mean shared wire copy. They are counted as separate articles but are not independent confirmation.