Key facts
- Russia's FSB confirmed receiving a US warning about a planned terrorist attack in Moscow.
- The US Embassy warned of a credible threat of a mass casualty event at Tsaritsyno Museum Reserve on October 31.
- The Tsaritsyno Museum Reserve has been temporarily closed and access restricted.
Russia's Federal Security Service (FSB) said it received information from the United States through established partner channels about preparations for a terrorist attack in Moscow and is taking appropriate measures. The US Embassy in Moscow separately confirmed awareness of a credible threat of a mass casualty event on Saturday at the Tsaritsyno Museum Reserve, a historic palace and park complex in southern Moscow. Access to the park is currently restricted, according to Russian law enforcement agencies. In March 2024, the US Embassy warned of imminent extremist plans for an attack in Moscow, days before gunmen attacked the Crocus City Hall concert venue, killing more than 140 people.