Russia's Federal Security Service says it has received information from the US through established partner channels about preparations for a terrorist attack in Moscow and is taking appropriate measures, the Russian news agency RIA reports. The U.S. Embassy in Moscow separately says it is "aware of a credible threat of a mass casualty event" at Moscow's Tsaritsyn Museum Reserve and says the U.S. government is coordinating with Russian authorities.

Russia's Federal Security Service says it has received information from the US through established partner channels about preparations for a terrorist attack in Moscow and is taking appropriate measures, the Russian news agency RIA reports. The U.S. Embassy in Moscow separately says it is "aware of a credible threat of a mass casualty event" at Moscow's Tsaritsyn Museum Reserve and says the U.S. government is coordinating with Russian authorities.