FBI investigates letters with ‘unknown substance’ sent to US election officials

Guardian World•Thu, Oct 15, 2026, 06:36 PM•2 min read

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”. Just weeks before November’s US...

Source: [Guardian World](https://www.theguardian.com/us-news/2026/oct/15/fbi-usps-letters-unknown-substance-election)

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