Congress Mail Panic – Sender Names Himself

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A Quincy, Illinois man allegedly mailed salt-filled letters to four members of Congress, then put his own name and home address on every envelope.

Quick Take

Matthew Unglesbee, of Quincy, Illinois, faces federal charges for mailing hoax letters with a white powder substance to four congressional offices.
All four envelopes reportedly carried his real name and home address as the return address, matching government records.
He told FBI agents the substance was table salt, chosen because it “kind of looks like anthrax.”
Agents reportedly found a fifth, unmailed envelope addressed to a Washington, D.C. congressional office during a search of his home.

Postmarks Trace Back To A Quincy Return Address

Investigators say four plain white envelopes went out with Springfield postmarks dated October 19. Each one carried a handwritten address and a white granular substance inside. The return addresses allegedly matched Unglesbee’s own name and home, a detail that made identifying a suspect almost automatic once the envelopes reached Illinois congressional offices and triggered hazmat responses.

The Department of Justice says Unglesbee was arrested and charged after agents connected the mailings to his Adams County address. Prosecutors describe the case as hinging on letters that carried an unknown substance paired with language meant to alarm whoever opened them, not an actual biological threat but one designed to look like one.

An Admission That Removes Any Real Doubt

According to the account summarized in the criminal complaint, Unglesbee told agents the powder was ordinary table salt. He reportedly picked it specifically because it resembles anthrax, the bacteria used in the deadly 2001 mail attacks that killed five people and terrorized Capitol Hill. Notes inside the envelopes allegedly read “HAH enjoy the gift” and “HA HA,” language prosecutors say shows he expected a fearful reaction.

Agents say Unglesbee acknowledged recipients would not know he was joking. He understood staff members might call hazmat crews, evacuate offices, and treat the letters as a genuine biological threat. That awareness matters legally. Federal hoax statutes do not require proof the sender wanted to hurt anyone physically, only that he knowingly sent a convincing fake threat expecting it to cause fear and disruption.

A Fifth Envelope Raises The Stakes

A search of Unglesbee’s home reportedly turned up a fifth envelope, empty and already addressed to a congressional office in Washington, D.C. That detail suggests the four mailed letters may not have been an isolated impulse. Prosecutors have charged him under federal statutes covering false information, hoaxes, and threatening communications, both carrying real prison exposure.

An Illinois man allegedly mailed letters filled with white powder to four members of Congress — then put his own return address on every single one.

Matthew G. Unglesbee now faces two felony charges after the FBI says he sent the letters as a fake anthrax hoax, telling law… pic.twitter.com/IYM3rBsO7f

— Fox News Politics (@foxnewspolitics) October 27, 2026

Lab testing reportedly confirmed what Unglesbee told agents: the substance was salt, not anthrax or any hazardous material. That finding matters for public safety, but it does not erase the alleged crime. Federal law treats a convincing hoax as seriously as it does because the fear and the emergency response it triggers are real, even when the powder itself is harmless.

Why Calling It A Joke Does Not Make It Harmless

Court records say Unglesbee told agents he mailed the Illinois letters after hearing news reports about similar mailings elsewhere, and that he denied sending letters outside Illinois. He also called the whole thing a joke. But he reportedly admitted he knew recipients could see it as a real threat, which is the exact standard hoax statutes were written to punish.

White-powder hoaxes are not new. Courts have repeatedly upheld convictions in similar cases, from letters sent to celebrities and political figures to one mailed to a sitting judge, because intent to deceive and alarm is enough under the law, regardless of whether real harm was possible. Post-9/11 anthrax fears turned ordinary mail into a potential crisis, and prosecutors have consistently treated fake scares as federal crimes, not pranks.

That history should inform how this case gets judged. A man who studies what makes a substance look like anthrax, then mails it to elected officials with a taunting note, is not engaging in harmless humor. He is exploiting a post-9/11 fear that exists precisely because real anthrax attacks once killed Americans. Calling it a joke afterward does not undo the hazmat calls, the evacuated offices, or the fear his own words admit he anticipated.