Tsaritsyno Evacuated as Russia's FSB Confirms U.S. Tip on Possible Attack

Russia's Federal Security Service (FSB) confirmed on Saturday that it had received information from the United States about a planned terrorist attack in Moscow, and that it was acting on it. Hours after the U.S. Embassy's alert, the Tsaritsyno Museum Reserve in southern Moscow was evacuated and closed to visitors, according to The Moscow Times and Mathrubhumi English.

The embassy has not said publicly who might be behind the threat. It said only that the U.S. government is coordinating with Russian authorities on a response.

What has happened on the ground

The FSB told Russian state media that it had received information from "U.S. partners" and was taking appropriate action. Russian news agencies also quoted the service as saying that work was underway.

Musician Lilia Pechenkina told the outlet Ostorozhno, Novosti! that an evacuation announcement came over the loudspeaker as she played the last piece of her concert. A journalist from the same outlet was told by security staff that the park was closed for "technical reasons."

The Baza Telegram channel, which allegedly has ties to Russian security services, reported that about 50 law enforcement officers were sent to the area and that police vehicles were patrolling the perimeter. Baza also said the venue was closed to incoming visitors and open only for exits.

How we got here: a timeline

• 1775: Empress Catherine II founded the Tsaritsyno estate as her personal summer residence, according to Mathrubhumi. The palace was never finished in her reign and was restored in the 2000s.
• February 2022: Russia launched its full-scale invasion of Ukraine, opening the confrontation with Western nations that forms the backdrop to the current alert, Mathrubhumi reported.
• March 2024: The U.S. passed Russia intelligence warnings about planned attacks, both outlets reported.
• March 22, 2024: The Crocus City Hall attack in Moscow killed 145 people and wounded hundreds more, according to The Moscow Times. Mathrubhumi described it as an ISIS-K assault on a concert hall. Russian spy chief Sergei Naryshkin said afterward that the U.S. information was too general to identify the attackers.
• Oct. 31, 2026: The U.S. Embassy warned of a "credible threat of a mass casualty event" at Tsaritsyno that day. The FSB confirmed receiving U.S. information, and the park was evacuated.

What this means for people in Moscow

For anyone in the Russian capital, the immediate effect is that one of the city's popular weekend sites is shut. Mathrubhumi describes Tsaritsyno as a favorite spot for locals and tourists.

The embassy told people to avoid the Tsaritsyno area on Oct. 31, stay alert and avoid crowds. It also published a personal safety checklist, according to Mathrubhumi. The list urges people to stay aware of their surroundings, review personal security plans, carry identification documents and keep phones fully charged. It also suggests following local news and enrolling in the Smart Traveler Enrollment Program, known as STEP, to receive security updates.

Why the 2024 precedent matters

Intelligence sharing between Washington and Moscow has happened before, even as relations remain strained. Mathrubhumi noted that peace negotiations facilitated by the Trump administration are currently paused, according to the Kremlin. President Vladimir Putin has repeatedly said the military campaign will continue until Moscow reaches its stated goals.

Whether the latest information is more specific than the 2024 warning has not been disclosed. Naryshkin's earlier criticism of the 2024 tip was that it lacked enough detail. This time the alert named a specific site and date, and Russian authorities moved quickly to clear it.

Neither the embassy nor the FSB has released further details about the nature of the threat.

Earlier on Around Prague: US Embassy warns of possible terror attack at Tsaritsyno park in Moscow

Around Prague, based on reporting by The Moscow Times, Mathrubhumi English