# Russia's FSB Says the US Tipped It Off About a Planned Terrorist Attack in Moscow

*2026-10-31 23:00 UTC · Other · 1 min read*

> The FSB says Washington passed on intelligence about an attack plot, while the US Embassy warns of a credible mass-casualty threat at Moscow's Tsaritsyno Museum Reserve.

Russia's Federal Security Service (FSB) said on October 31 that it received information from the United States about preparations for a terrorist attack in Moscow. The agency said the data came through established partner channels and that it is taking "appropriate measures," Russian news agency RIA reported.

The US Embassy in Moscow separately said it is aware of a credible threat of a mass casualty event at the Tsaritsyno Museum Reserve in the Russian capital, and that Washington is coordinating with Russian authorities.

No details have been given about the nature of the plot, who is behind it, or whether any arrests have been made. The exchange is notable as a rare case of US-Russia security cooperation amid tense relations.

## Sources

- [timesofisrael.com](https://www.timesofisrael.com/liveblog_entry/russias-fsb-says-us-tipped-it-off-about-moscow-attack-plot/)

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Česká verze: https://techtools.cz/tools/news/clanek/2687-ruska-fsb-usa-ji-upozornily-na-chystany-teroristicky-utok-v-moskve