Moscow Mayor Sergei Sobyanin said on the morning of June 18 that drones had attacked the Moscow Oil Refinery, the largest fuel supplier to the Moscow region.
Sobyanin described the incident as a massive drone attack on the Russian capital, claiming 180 drones had been "shot down on their approach to Moscow."
However, he said that several drones had managed to reach the refinery in the southeastern Kapotnya district and measures were being taken to deal with the consequences.
Ukrainian President Volodymyr Zelenskyy has confirmed Ukrainian forces hit the Moscow Oil Refinery for the second time this week.
"This is a fully justified response to Russian attacks on our cities and communities, and another important result of our warriors' work against facilities that sustain Russia's war machine," he wrote in a post on X.
Ukrainian Foreign Minister Andriy Sybiha has also commented on the Moscow attack in a post on X, saying Russia started a war of aggression against Ukraine and has been killing its people for years.
Russia's Defense Ministry said air defense systems intercepted and destroyed 555 Ukrainian drones overnight across multiple regions, including the Moscow region, the Russian-occupied Crimean Peninsula, and the Sea of Azov.
Reports also said debris from intercepted drones fell on the grounds of the nearby Sadovod market, one of Moscow's largest wholesale and retail markets.
According to the Moscow regional governor, a high-rise residential building and a number of private houses were also damaged in the drone attack.
"As a result of a drone attack in the Moscow region, 16 people have been injured, including two children," Andrei Vorobyov said in a Telegram post on June 18.
As Moscow Burns, Russia's Fuel Crisis Spreads
After the attacks, a Kremlin aide suggested they had dimmed the prospect of a face-to-face meeting between Zelenskyy and his Russian counterpart.
"New attacks by the Kyiv regime do not bring any personal contacts with Russian President Vladimir Putin any closer," Yury Ushakov was quoted as saying by Russian media on June 18.
Russian Telegram channels, citing eyewitnesses, reported fires following the attack and thick smoke over the city. Attacks were also reported in Russia's Rostov and Belgorod regions.
The Russian Telegram channel Astra reported that a strike sparked a fire at an oil refinery in Gukovo, in the Rostov region, while a warehouse containing flammable materials was burning in Shebekino, in the Belgorod region.
Authorities in those regions have not provided details about the facilities that were hit.
The Ukrainian military has not yet commented on the attacks.
The Moscow Oil Refinery in Kapotnya was also struck earlier this week, on June 16.
Following that attack, Reuters, citing two anonymous industry sources, reported that the refinery had suspended operations.
According to Reuters' sources, the strike on the refinery, owned by Gazpromneft, the oil subsidiary of state-controlled energy giant Gazprom, and located in southeastern Moscow, damaged the primary processing unit responsible for 53 percent of the plant's capacity.
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Hydrocracker Strikes Spark Fuel Crunch As Ukraine Pounds Russian RefineriesUkraine's General Staff said on June 16 that the Moscow refinery plays a role in supplying Russia's military. It said the facility accounts for more than 38 percent of fuel consumption in the Moscow region and supplies aviation fuel to Domodedovo, Vnukovo, Sheremetyevo, and Zhukovsky airports. The refinery usually has an annual processing capacity of more than 12 million tons of oil.
Earlier, RFE/RL's Russian Service, which has been tracking the deployment of new air defense systems in Moscow and the surrounding region, reported that a tower for a Pantsir air defense system had only recently been installed near the refinery but had not yet been equipped with the missile system itself.
Ukrainian forces have regularly targeted facilities in Russia's oil industry.
In late May, Reuters reported that Ukrainian drone attacks had forced nearly all major refineries in central Russia to suspend or reduce production.
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No Concerts, Air Shows, Or Tanks On Parade: Kyiv's Long-Range Strikes Spook KremlinResidents of the Belgorod and Ryazan regions, Krasnodar territory and several other parts of Russia have previously complained about shortages of gasoline and diesel fuel.
Fuel sales restrictions have been introduced in a number of regions, including reported limits on gasoline purchases at major filling-station chains in Moscow.
Meanwhile, the Ukrainian Air Force reported on June 18 that Russian forces had attacked Ukraine overnight with seven Iskander-M/S-400 ballistic missiles and 239 strike drones.
An air raid alert was declared in several Ukrainian regions overnight due to the threat of Russian ballistic weapons, and explosions were heard in the capital, Kyiv, central city of Poltava, and eastern city of Dnipro.
According to local authorities, Russian forces attacked two districts in the Poltava region overnight, including an energy facility, causing power outages. One person was injured and hospitalized. In Dnipro, one person was killed and 11 others were injured as the strikes damaged a private facility.