# Federal authorities investigate suspicious mail sent to congressional and secretary of state offices

https://mins.news/en/item/101833

- NBC News, 2026-10-15 16:38 UTC
- Politics
- Original: https://www.nbcnews.com/politics/2026-election/authorities-investigate-suspicious-mailings-congressional-offices-rcna603712

> The FBI, U.S. Capitol Police and other federal authorities are investigating suspicious mailings sent to congressional and secretary of state offices.

## Related coverage

- [FBI investigates suspicious letters mailed to congressional offices](https://mins.news/en/video/102278) — Fox News, 2026-10-15
- [Letters containing ‘suspicious substances’ sent to US election offices](https://mins.news/en/item/102024) — BBC News, 2026-10-15
- [Authorities investigate letters containing ‘suspicious substances’ sent to congressional and election offices](https://mins.news/en/item/101727) — The Associated Press, 2026-10-15
