The US Embassy warned of the threat of a mass casualty incident at the Tsaritsyno Museum. The US Embassy in Moscow issued a security alert. He says that diplomats have become aware of the threat to the Tsaritsino museum reserve. The US Embassy in Moscow has become aware of a credible threat of an event that could lead to mass casualties on October 31, on the grounds of the Tsaritsyno Museum Reserve. The US government is coordinating the response with the relevant authorities in Russia. The Russian authorities have not yet responded to this message.