An explosion hit the 75th Arsenal, a Russian army plant in Serpukhov south of Moscow, overnight on 22 October, Russian Telegram channel Astra reported. Russian officials also claimed drone attacks on the Moscow region, Tula, and Lipetsk that night.

As Russia presses its full-scale invasion, Ukraine’s long-range drones and missiles keep hitting military plants and refineries deep inside Russia. Ukrainian outlet Militarnyi says this plant specializes in repairing Buk and S-300 air defense systems. Astra describes it more broadly, as making weapons and ammunition and repairing military equipment. If Militarnyi is right, the blast hit a site that fixes Russian air defenses. It came the night Moscow’s mayor credited air defenses with stopping hundreds of drones.

Blast at the arsenal

An Astra OSINT analyst placed the explosion inside the site from a video, the channel said. Residents claimed in local chats that blasts followed passing drones, then at least three missiles. Astra did not confirm the missile count. Serpukhov lies about 99 km south of Moscow. Ukraine has sanctioned the plant, and the US Treasury has listed it too. As of the morning of 22 October, no Russian official had confirmed the blast.

630 drones, by Moscow’s count

Moscow Mayor Sergei Sobyanin claimed that 630 drones flew toward the Moscow region from 20:30 on 21 October to 04:00 on 22 October. He claimed most were destroyed far out and 163 were neutralized on approach to Moscow. Two people were injured in Voronovo, in New Moscow, he stated.

Tula Oblast Governor Dmitry Milyaev claimed air defenses downed 70 Ukrainian drones over his region. Private homes were damaged in Tula and the Zaoksky district, he stated.

Lipetsk governor claims homes and a clinic damaged

Earlier in the night, Ukrainian monitoring channel Exilenova+ posted footage of commotion in Lipetsk after explosions. Lipetsk Oblast Governor Igor Artamonov claimed a drone strike damaged homes, apartment blocks, and a closed polyclinic. A man born in 2001 was injured and hospitalized, Artamonov claimed.

In May, Ukrainian intelligence said Russia was deploying more regiments against strike drones. In September, Ukrainian units hit more Russian air defense systems and radars than in any month since 2024, Ukraine’s Defense Ministry said. Analyst Oleksandr Kovalenko counted 76 destroyed in September with days of the month still to go and argued Russia cannot replace such losses. If Militarnyi’s description holds, losing repair capacity would deepen that gap.

Drones attacked Moscow and Moscow Oblast overnight on 6 October, and a fire broke out at the Volodarskaya pipeline station, the region's largest oil depot, monitoring Telegram channels reported. The station supplies jet fuel to Moscow's main airports. Local authorities did not mention the fire, while claiming to have downed hundreds of drones.

Ukraine's long-range drones have spent years working through Russia's oil industry, and Kyiv says its strikes have now disabled more than half of Russia's refining capacity. The storage and pipeline hubs that move the remaining fuel are what keep the army, the capital, and the export flows supplied.

Fire at the Moscow region's largest fuel depot

Ukrainian monitoring channel Exilenova+ wrote that the Volodarskaya station was burning after the attack, and Ukrainian monitoring channel Supernova+ reported the strike on the depot. Exilenova+ then posted the site's coordinates near the village of Konstantinovo. Supernova+ said a storage tank was on fire, and Exilenova+, citing locals, later wrote that two tanks were burning.

Russian news Telegram channel Astra geolocated a Supernova+ video to Konstantinovo in Ramensky district. The station had not been reported attacked before, Astra said.

The station lies 40 km from central Moscow, Militarnyi reported. Drone alerts in the area began at 23:43 on 5 October. From 03:24, reports came in of Ukrainian Peklo drones flying through Oryol Oblast toward Moscow Oblast, the outlet said. Ukraine's military has not commented on the strike.

Early in the night, Exilenova+ claimed a strike on the Moscow refinery in Kapotnya. It later said the footage circulating from there was most likely archival.

Jet fuel for Vnukovo, Domodedovo, and Sheremetyevo

The station has 27 tanks with a combined capacity of about 250,000 m³, according to Militarnyi. It connects to the ring pipeline for petroleum products around Moscow, which carries aviation fuel to Vnukovo, Domodedovo, and Sheremetyevo airports. Russia's state pipeline operator Transneft has said the station can move up to 3 million tonnes of jet fuel, 2.8 million tonnes of diesel, and 1.6 million tonnes of gasoline a year.

Astra gave a lower figure: about 3 million tonnes of petroleum products a year in total, arriving from the Moscow and Ryazan refineries. Supernova+ described Volodarskaya as a branch of Transneft–Upper Volga, as did Militarnyi, while Astra named Transnefteprodukt.

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Russia claims hundreds of drones downed

Moscow Mayor Sergei Sobyanin claimed that 650 drones flew toward the Moscow region from the evening of 5 October to the morning of 6 October. Most were downed far from the city, and 105 near Moscow, he claimed, without mentioning any damage. Adding up his later posts, Astra counted at least 718 drones aimed at Moscow. Moscow Oblast Governor Andrei Vorobyov claimed that 185 drones were downed over 16 municipalities. He later called it one of the largest drone attacks and put the toll at two killed and nine injured, with 47 detached houses damaged in seven municipalities.

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Not the first Transneft site or Moscow fuel target

Ukraine has targeted Russia's pipeline network before. On 2 October, drones set Transneft's Samara station on fire. During Russia's Duma elections on 20 September, a strike reached Moscow's fuel supply. The Moscow refinery fully stopped processing oil after that attack. Days later, Kyiv offered to halt refinery strikes if Russia stopped hitting Ukraine's power grid. Russia has not taken the deal.