The US Embassy in Russia warned visitors to the Tsaritsyno Museum in Moscow of the threat on October 31 and November 1. There, US citizens were urged to avoid the museum and the crowds near it.

The US Embassy in Russia warned visitors to the Tsaritsyno Museum in Moscow of the threat on October 31 and November 1. There, US citizens were urged to avoid the museum and the crowds near it.

The Russian state news agency TASS reported that Russia's FSB "received a warning from the United States about the preparation of a terrorist attack in Moscow."