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Politics

U.S. Embassy Warns of Credible Mass-Casualty Threat at Moscow Museum Site on Saturday

The U.S. Embassy in Moscow warned Americans to avoid the Tsaritsyno Museum Reserve on Saturday, October 31, after a credible threat of a mass-casualty event there. Russia's FSB said it received U.S. information about attack plans in Moscow, and Russian news agencies reported the museum grounds were closed.

By admin Oct. 31, 2026 · 9:44 PM ET 2 min read

A red-brick historic palace with domed towers beside parkland with autumn trees and a curving path
A red-brick historic palace with domed towers beside parkland with autumn trees and a curving path

The U.S. Embassy in Moscow warned Americans on Saturday, October 31, to avoid the Tsaritsyno Museum Reserve after what it called a credible threat of a mass-casualty event at the site that day.

“The U.S. Embassy in Moscow is aware of a credible threat of a mass casualty event TODAY October 31, at the Tsaritsyno Museum Reserve in Moscow at Dolskaya Ulitsa 1, Moscow, Russia 11569,” the embassy said in a security alert posted Saturday. “The U.S. government is coordinating with appropriate Russian authorities on a response.”

Closed ornate black iron gates between stone pillars at the entrance to a park

The embassy told Americans to avoid the museum reserve and the surrounding area for the day, stay alert, avoid crowds, keep cellphones charged, carry identification, and follow local media for updates.

What the embassy and the FSB said

Russia’s Federal Security Service, the FSB, said it had received information from U.S. partners about plans for a terrorist attack in Moscow and was taking appropriate action, according to the New York Post, which cited a report in The Moscow Times. The FSB statement, as reported, did not name Tsaritsyno, name a possible perpetrator, or describe the nature of the threat.

The embassy alert also did not name a perpetrator or describe how the threat would be carried out. It described a threat for October 31 at one named location, not an attack that had already happened.

A wide park path covered with fallen yellow leaves, lined with autumn trees, with a historic palace in the distance

Russian news agency RIA reported, citing law enforcement agencies, that the museum reserve was temporarily closed and access to the park was restricted, according to the New York Post.

A site with a prior warning in 2024

Tsaritsyno is a palace and park complex south of Moscow that was founded in 1775 as Empress Catherine II’s summer home, according to the New York Post. The grounds cover roughly 1,000 acres and drew more than two million visitors in 2022, the Post reported, citing Moscow Deputy Mayor Natalya Sergunina.

The red-brick and white-stone facade of a historic palace with arched windows, seen from a lawn

The warning follows a similar U.S. alert in March 2024, when the embassy said extremists had imminent plans to target large gatherings in Moscow, including concerts. On March 22, 2024, gunmen attacked Crocus City Hall outside Moscow, killing more than 140 people and wounding hundreds more, according to the New York Post.

Reporting based on coverage by the U.S. Embassy in Moscow and the New York Post.

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