# Authorities investigate letters containing ‘suspicious substances’ sent to congressional and election offices

https://mins.news/en/item/101756

- ABC News, 2026-10-15 15:59 UTC
- Politics
- Original: https://abcnews.com/Politics/wireStory/authorities-investigate-letters-suspicious-substances-congressional-election-offices-137290377

> Federal authorities are investigating letters containing “suspicious substances” that were mailed to congressional and election offices across the country.

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- [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
- [Federal agencies examine suspicious-substance letters sent to congressional offices](https://mins.news/en/item/101773) — ABC 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