Russia says U.S. shared warning of possible Moscow terror attack

Russia’s Federal Security Service said the United States had passed along intelligence about preparations for a terrorist attack in Moscow. The agency, known as the FSB, said it was responding with appropriate measures, according to a Reuters report published by NBC News on Nov. 1.

Separately, the U.S. Embassy in Moscow said it knew of a credible threat of a mass-casualty event on Saturday at the Tsaritsyno Museum Reserve. The embassy said U.S. officials were coordinating with Russian authorities; the FSB described the warning as arriving through established partner channels.

Russian news agency RIA, citing law enforcement agencies, reported that the palace museum and park complex had temporarily closed Saturday and that park access remained restricted.

The Russian tabloid Baza reported that an evacuation interrupted an organ concert with about 10 minutes remaining. A later concert celebrating North Caucasus folk traditions was canceled, the outlet said.

The warning follows an earlier episode in March 2024, when the U.S. Embassy alerted the public to extremists’ imminent plans for an attack in Moscow. Days afterward, gunmen killed more than 140 people at Crocus City Hall outside the capital.