# Federal agencies examine suspicious-substance letters sent to congressional offices

https://mins.news/en/item/101773

- ABC News, 2026-10-15 16:09 UTC
- Politics
- Original: https://abcnews.com/US/feds-investigating-letters-suspicious-substances-multiple-congressional-offices/story?id=137291867

> A notice circulated to Senate personnel says several federal bodies are examining a nationwide mailing of letters sent to congressional offices and described as containing suspicious substances.

## Related coverage

- [Federal probe widens into suspicious-substance letters sent to officials’ offices](https://mins.news/en/item/103755) — NBC News, 2026-10-16
- [FBI investigates suspicious letters mailed to congressional offices](https://mins.news/en/video/102278) — Fox 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