Kathmandu. Moscow: Russia’s four major airports were briefly closed on Monday after more than 60 drones were shot down in the Russian capital, officials said.

Skoka Mayor Sergei Sobyanin said on Telegram that 59 Moscow-bound drones had been destroyed.

As Russia continues to attack Ukrainian cities, Ukraine has been attacking drones inside Russia in retaliation. However, Mayor Sobyanin did not say whether the drone was launched from Ukraine or not.

Russian aviation authorities temporarily closed all four airports in Moscow for security reasons. Airports reopened at 5:39 a.m. local time, officials said.