The U.S. Embassy in Moscow issued a security alert on Saturday warning of a potential “mass casualty event” at the Tsaritsyno Museum Reserve.
“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, located at Dolskaya Ulitsa 1, Moscow, Russia, 11569,” the embassy stated. “The U.S. government is coordinating with appropriate Russian authorities on a response.”
The alert urged the public to avoid the Tsaritsyno Museum area and advised people to remain vigilant and steer clear of crowds.
Established in 1775 as a summer residence for Catherine II, the Tsaritsyno Museum is now a major tourist destination in Russia’s capital.
A photograph taken on October 22, 2017 shows the Tsaritsyno Palace Museum and Reserve in the South of Moscow. (MLADEN ANTONOV/AFP via Getty Images)
The museum recorded more than two million visitors in 2022, according to Moscow Deputy Mayor Natalya Sergunina, who disclosed the figure in 2023. The surrounding grounds, which are popular with local residents for exercise and dog walking, experience even higher foot traffic, The Art Newspaper reported.
Beyond the threat warning, the embassy advised individuals in the Moscow area to keep mobile devices and batteries charged, maintain situational awareness, and review personal security plans.
The security alert was issued amid escalating hostilities in the ongoing war between Russia and Ukraine.
A photograph taken on October 22, 2017 shows the Tsaritsyno Palace Museum and Reserve in the South of Moscow. (MLADEN ANTONOV/AFP via Getty Images)
Ukraine struck an oil refinery in southern Russia on Friday, ending a two-week pause on attacks against energy infrastructure that had been brokered by U.S. President Donald Trump.
The previous day, Russian drone and missile strikes in Ukraine killed at least 27 civilians, according to The Wall Street Journal.
A residential building damaged from Russian attacks is seen during a local ceasefire related to a humanitarian aid mission in Oleshky, in Kherson, Ukraine, Thursday, Oct. 29, 2026. (AP Photo/Evgeniy Maloletka)
Fox News Digital has contacted the U.S. Embassy in Moscow for additional information.