MOSCOW, March 15 (Xinhua) -- Russian air defense systems shot down 170 Ukrainian drones overnight, including 27 headed toward Moscow, according to the Russian authorities on Sunday.

Photo taken on March 10, 2022 shows the Kremlin in Moscow, Russia. (Photo: Xinhua)

From Saturday night to Sunday morning, air defense systems intercepted and destroyed the drones over multiple Russian regions, said the Russian Defense Ministry.

Russian air defense systems shot down 27 drones headed toward Moscow, said Moscow Mayor Sergei Sobyanin on his social media channel.

Temporary restrictions were imposed on arrivals and departures at Moscow's Vnukovo Airport and Kaluga Airport in the Kaluga region, according to Rosaviatsia, Russia's civil aviation authority.

The restrictions were necessary to ensure flight safety, Rosaviatsia said.