Russia's capital Moscow shot down dozens of drones early Monday and briefly suspended flights at its four airports, local authorities said, just days after Ukraine again attacked the city's oil refinery.

Almost 60 drones bound for Moscow were shot down, Mayor Sergei Sobianin said on Telegram, without providing further details, adding that emergency services had been sent to the areas where the drones were shot down.

Ukraine has launched drones against Russia in response to Russian bombing of its cities, although Sobianin did not say whether Monday's drones were Ukrainian.

The authorities closed the capital's airports at 02:39 (01:39 CET) and reopened them almost three hours later.

The airports of Sheremetyevo, Domodedovo and Vnukovo, as well as Zhukovskiy, near the capital, suspended their flights, although they later resumed, as reported separately by the aviation regulator.

The attack comes after drones again attacked Moscow's only oil refinery last week.

In that offensive, Moscow's defense systems shot down nearly 200 drones in one of the largest airstrikes against the city since the large-scale Russian invasion of Ukraine in 2022.

They restrict energy and fuels in Sebastopol

The city of Sevastopol, in Crimea (annexed by Russia), canceled all outdoor public events on Monday and will keep public lighting off, the city's governor, Mikhail Razvozhayev, announced on Telegram, calling on the population to reduce electricity consumption.

Crimea, a popular tourist destination for Russians, has suspended fuel sales to the public and businesses, and supplies have been restricted to government agencies responsible for essential services and security, due to the fuel crisis caused by Ukraine's drone attacks on its supply routes and energy facilities in other regions.