The FSB reported that it had received information from the US through partner channels about the preparation of a terrorist attack in Moscow. Earlier, the US Embassy in Moscow stated that it had become aware of a "credible threat" of an incident that could lead to mass casualties on Saturday, October 31, on the grounds of the Tsaritsyno Museum Reserve in Moscow. The FSB is investigating information from the United States about the preparation of a terrorist attack in Moscow. According to media reports, the area of the museum reserve is temporarily closed and closed.