Ukraine’s Defense Intelligence, an arm of the Ministry of Defense, says it carried out a drone attack on Moscow early Monday morning, a Defense Intelligence official has told CNN.

The official was speaking on condition of anonymity because they had not received authorization to talk publicly about the incident.

Russian authorities said that Ukrainian drones hit two non-residential buildings in Moscow, calling the incident a "thwarted" attack. The Kremlin said later that all the drones targeting the Russian capital had been neutralized.