The US Embassy in Moscow reported a "credible threat of an incident" with possible mass casualties on the grounds of the Tsaritsyno Museum Reserve. Data up to this minute according to the diplomatic mission, the threat is relevant for today, October 31. The American embassy said that it is coordinating the response measures with the Russian authorities. US citizens were advised not to visit Tsaritsyn, stay away from the area and avoid crowded places. Information about the preparation of a terrorist attack in Moscow was received through partner channels from the USA, relevant work is being carried out, the FSB reported. "Be careful, news. " Tsaritsino was closed to visitors. Security officers explained the closure was for technical reasons, but did not provide details. "Careful Media". Police arrived at the museum-reserve, but the entrance to the area is now closed. Tsaritsino will remain closed for at least the next two days, reports Baza. Dogs were sent to the park to examine the area, and the entrances to the museum reserve were blocked.