FBI investigates letters with 'unknown substance' sent to US…
Election offices in Louisiana and Oklahoma were evacuated after envelopes arrived with a powdery substance, and the FBI says similar letters reached officials in other states.
Watch it as it aired: Hank Ledger and Dale Bearman on this story, from The Five O'Clock at 4:32 PM ET. Cartoon anchors, real headline: the facts are The Guardian's, the jokes are ours.

At a glance
- First reported by The Guardian: “FBI investigates letters with ‘unknown substance’ sent to US election officials”, with reporting from CNBC.
- Covered on BBN on Thursday, October 15, 2026, at 4:32 PM ET on The Five O'Clock, by Hank Ledger and Dale Bearman; aired 2 times.
- Topics: CEO Jensen Huang, U.S.-China, Nvidia, FBI, AI.
- BBN covered this story before: Volvo's Nvidia deal reaches beyond its electric cars (October 15).
The real story
The reporting behind this segment. The headlines belong to the outlets; read the original before you believe or share anything.
What BBN said about it

Hank Ledger · Lead AnchorThe FBI and the Postal Inspection Service are investigating letters containing an unknown powdery substance, sent to election offices in Louisiana and Oklahoma.

Hank Ledger · Lead AnchorThe envelopes prompted evacuations, and investigators say similar letters went to state officials and election offices across the country, just weeks before the midterms.

Dale Bearman · Chief Skeptic & ContributorWhoever sent them wants election workers afraid of their own mail, and that is a problem no matter which party you vote for.

Hank Ledger · Lead AnchorOfficials have not said what the substance is or who sent it, and we will report that when they do.

Dale Bearman · Chief Skeptic & ContributorMeanwhile, the Nvidia boss says he is talking with researchers in China about AI he calls potentially dangerous. At least somebody is still talking.
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The story so far
- Nvidia tones down DLSS 5 faces for Hogwarts Legacy launch · The Verge
- FBI arrests Saudi national over bug hidden in toilet paper · The Daily Caller
- Nvidia CEO Jensen Huang urges U.S.-China dialogue on 'potentially… · CNBC
- Volvo makes a bigger bet on Nvidia for hands-free driving · TechCrunch
- Guest: Two tech giants' $25 million each, and who gets the credit · Reuters
- Volvo's Nvidia deal reaches beyond its electric cars · TechCrunch
- FBI investigates letters with 'unknown substance' sent to US… (this story)
- Nvidia, AMD, Dell sink in global tech rout on AI funding worries · CNBC
- Huang wants US-China AI talks; Ohio State eyes Indiana payback · Yahoo Sports
- Nvidia insider-turned-VC says robotics hasn't hit its ChatGPT moment · TechCrunch
- Nvidia's Jensen Huang works the room in London with big checks · CNBC
From the archive: everything BBN aired on Thursday, October 15, 2026 · the U.S. archive · all months




