Coverage dated October 25, 2026 to October 28, 2026

Man accused of sending letters with 'unknown substance' to Illinois congressional offices

Headline from WCIA Champaign, on the newest of 2 developments

SPRINGFIELD, Ill. (WCIA) -- A man from Quincy is facing federal charges after prosecutors said he mailed letters containing an unknown substance to congressional offices in the Chicago area. Matthew Unglesbee, 36, was arrested on Sunday by federal authorities following the execution of a search warr…

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

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. Illinois man charged with mailing white powder to members of Congress

    Headline from WHEC Rochester ·

  2. Newest

    Man accused of sending letters with 'unknown substance' to Illinois congressional offices

    Headline from WCIA Champaign ·

8 reports not tied to one development ·

Reports & sources

56 articles, oldest first.

  1. NBC Los Angeles

    Illinois man charged with mailing threatening letters with white substance to members of Congress (opens NBC Los Angeles)

    Published

    NBC Los Angeles's feed description

    The U.S. Capitol is seen from the top of the Washington Monument in Washington, DC, on October 22, 2026. (Photo by SAUL LOEB / AFP via Getty Images)

  2. ABC 7 Chicago

    Man accused of allegedly sending letters with white powder to 4 members of Congress in Illinois: DOJ (opens ABC 7 Chicago)

    Published

    ABC 7 Chicago's feed description

    A man was charged with allegedly sending letters with white powder to four members of Congress after allegedly being inspired to do so by reports of other letters with white powder sent to senators and secretaries of state around the country, according to court documents unsealed on Monday.

  3. Independent Journal Review

    Illinois Man Charged Over Powder Letters to Congress (opens Independent Journal Review)

    Published

    Independent Journal Review's feed description

    Quincy man Matthew Unglesbee, 37, faces federal charges after admitting he mailed four letters with salt that "kind of looks like" anthrax and notes reading "HAH enjoy the gift" to Chicago-area members of Congress.

  4. NBC News

    Man charged with mailing threatening letters with white substance to members of Congress (opens NBC News)

    Published

    NBC News's feed description

    A man has been charged in Illinois with mailing four letters containing a white granular substance to members of Congress, all of which were sent in envelopes containing his name and home address.

  5. The Hill

    Man charged with sending white substance to 4 lawmakers (opens The Hill)

    Published

    The Hill's feed description

    An Illinois man is facing federal charges related to mailing letters containing a white substance to four members of Congress this month in an act inspired by reports of suspicious packages being sent to dozens of lawmakers and election officials across the country.

  6. St. Louis Post-Dispatch

    Illinois man charged with sending threatening letters to Congress members in Chicago (opens St. Louis Post-Dispatch)

    Published

    St. Louis Post-Dispatch's feed description

    Matthew Unglesbee, 37, of Quincy, was charged in a criminal complaint unsealed Monday in U.S. District Court with mailing threatening communications and perpetrating a hoax.

  7. Eyewitness News (WEHT/WTVW)

    Illinois man charged with sending white substance to 4 lawmakers (opens Eyewitness News (WEHT/WTVW))

    Published

    Eyewitness News (WEHT/WTVW)'s feed description

    An Illinois man is facing federal charges related to mailing letters containing a white substance to four members of Congress this month in an act inspired by reports of suspicious packages being sent to dozens of lawmakers and election officials across the country.

  8. NOTUS

    Illinois Man Charged With Mailing White Powder to Four Members of Congress (opens NOTUS)

    Published

    NOTUS's feed description

    The suspect said the substance was actually salt but that it “kind of looks like” anthrax.

  9. Bangor Daily News

    Illinois man charged with mailing white powder to members of Congress (opens Bangor Daily News)

    Published

    Bangor Daily News's feed description

    SPRINGFIELD, Ill. (AP) — A 37-year-old Illinois man is charged with sending threatening letters to members of Congress containing a white powder, including one with a note reading “HAH enjoy the gift,” according to federal court records.

  10. Fox32 Chicago

    Illinois man accused of mailing letters with suspicious substance to Chicago-area congressional offices (opens Fox32 Chicago)

    Published

    Fox32 Chicago's feed description

    A Quincy man has been arrested on federal charges accusing him of mailing letters containing a suspicious white substance to members of Congress, including letters recovered from congressional offices in Chicago, officials said.

  11. WGN Chicago

    Quincy man charged with mailing white powder to members of Congress in Chicago (opens WGN Chicago)

    Published

    WGN Chicago's feed description

    SPRINGFIELD, Ill. (AP) — A 37-year-old Illinois man is charged with sending threatening letters to members of Congress containing a white powder, including one with a note reading “HAH enjoy the gift,” according to federal court records.

  12. HuffPost

    Illinois Man Accused Of Mailing White Powder To Members Of Congress (opens HuffPost)

    Published

    HuffPost's feed description

    Matthew Ungelsbee, 37, is charged with sending threatening letters to members of Congress containing a white powder, including one with a note reading “HAH enjoy the gift.”.

  13. Just the News

    Illinois man charged for allegedly sending white powder to members of Congress in Chicago area (opens Just the News)

    Published

    Just the News's feed description

    According to the criminal complaint against the suspect, he claimed he was only joking but realized that the recipients could perceive the joke as a threat.

  14. Sun Times

    Feds say Quincy man mailed letters containing white powder to members of Illinois congressional delegation (opens Sun Times)

    Published

    Sun Times's feed description

    A 36-year-old Quincy man is accused of mailing letters containing white powder to four members of Congress from Illinois, including a senator and three House members, according to a criminal complaint filed in the U.S. District Court Monday.

  15. Washington Examiner

    Illinois man charged in white powder mail hoax targeting members of Congress (opens Washington Examiner)

    Published

    Washington Examiner's feed description

    An Illinois man was arrested and charged by federal authorities for allegedly mailing letters containing an unknown substance to the state’s congressional offices, the Department of Justice said on Monday.

  16. UPI

    Man charged with mailing threatening letters to Illinois lawmakers (opens UPI)

    Published

    UPI's feed description

    An Illinois man has been charged with mailing four letters containing a white granular substance to members of Congress in the Chicago area.

  17. BNO News

    Illinois man charged with mailing white powder to 4 members of Congress (opens BNO News)

    Published

    BNO News's feed description

    An Illinois man has been arrested on federal charges after allegedly mailing letters containing a white substance to four members of Congress, according to authorities. Authorities say he told them he used salt because it looked like anthrax. Matthew G.

  18. ABC News

    Man who allegedly sent white substance to lawmakers put his address on envelopes: DOJ (opens ABC News)

    Published

    ABC News's feed description

    A man was charged with allegedly sending letters with "white granular substance," which turned out to be salt, to four Congress members, a criminal complaint said.

  19. BizPac Review

    Congressional offices receive threatening letters and mystery white powder — prosecutors identify alleged sender (opens BizPac Review)

    Published

    BizPac Review's feed description

    A man has been arrested in connection with several letters containing a white substance that were sent to congressmembers. It didn’t take authorities long to track down […]

  20. The Guardian

    Illinois man arrested after allegedly sending suspicious powder to Congress members using his return address (opens The Guardian)

    Published

    The Guardian's feed description

    Matthew Unglesbee admitted to sending the letters to four unidentified politicians, officials say An Illinois man accused of sending letters containing suspicious white powder to four members of Congress has been arrested after he allegedly wrote his own name and return address on the envelopes, acc…

  21. ABC 7 San Francisco

    Man who allegedly sent white substance to members of Congress put his address on envelopes: DOJ (opens ABC 7 San Francisco)

    Published

    ABC 7 San Francisco's feed description

    A man was charged with allegedly sending letters with "white granular substance," which turned out to be salt, to four Congress members, a criminal complaint said.

  22. Fox News

    Illinois man accused of threatening Congress with white substances in letters marked with his return address (opens Fox News)

    Published

    Fox News's feed description

    Matthew Unglesbee allegedly told the FBI the white powder substance was salt and that he mailed the threatening letters to Congress as a joke.

  23. WCIA Champaign

    Man accused of sending letters with 'unknown substance' to Illinois congressional offices (opens WCIA Champaign)

    Published

    WCIA Champaign's feed description

    SPRINGFIELD, Ill. (WCIA) -- A man from Quincy is facing federal charges after prosecutors said he mailed letters containing an unknown substance to congressional offices in the Chicago area. Matthew Unglesbee, 36, was arrested on Sunday by federal authorities following the execution of a search warr…

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

Separate coverage close to this update in time and subject.

Man accused of sending letters with 'unknown substance' to Illinois congressional offices | Since Then