The US Embassy in Moscow issued a warning about the threat of an emergency situation with casualties in the Tsaritsyno Park in the capital. The official report of the diplomatic mission reported that the department was informed of a "credible threat of an event that could lead to mass casualties today, October 31, in the territory of the Tsaritsyno Museum Reserve in Moscow." The post notes that "the US government is coordinating response measures with the Russian authorities." American diplomats recommended avoiding visiting the park and crowds of people, not approaching the area, maintaining vigilance and monitoring the situation. The museum's custody stated that they had no information about the threat. Tsaritsino continues to operate as usual.

The US Embassy in Moscow issued a warning about the threat of an emergency situation with casualties in the Tsaritsyno Park in the capital. The official report of the diplomatic mission reported that the department was informed of a "credible threat of an event that could lead to mass casualties today, October 31, in the territory of the Tsaritsyno Museum Reserve in Moscow." The post notes that "the US government is coordinating response measures with the Russian authorities." American diplomats recommended avoiding visiting the park and crowds of people, not approaching the area, maintaining vigilance and monitoring the situation. The museum's custody stated that they had no information about the threat. Tsaritsino continues to operate as usual.