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.

Ukrainian drones struck two fuel depots in Krasnodar Krai overnight on 28 September, setting both on fire, Militarnyi reported. The targets were the NFB-Pavlovskaya depot in Pavlovskaya and the Edelveys-95 depot near Novotitarovskaya, about 25 km from Krasnodar.

Residents heard six explosions near the railway

A drone alert was declared in the region at 23:43. Residents of Novotitarovskaya then reported drones overhead and at least six explosions near the railway, Russian news Telegram channel Astra reported. Fires broke out at both depots. NASA FIRMS satellite data confirmed both blazes by 04:24, Militarnyi reported, citing imagery published by Ukrainian Telegram channel Exilenova+.

What the depots store

NFB-Pavlovskaya handles cargo operations with petroleum products, including wholesale trade in motor fuel and petroleum storage, Militarnyi reported.

Edelveys-95 is a similar facility. It specializes in wholesale distribution of diesel fuel (Euro-5 standard) and gasoline (AI-92, AI-95, and AI-100), Astra reported. Its capacity is 4,500 cubic meters, and it has its own rail siding for receiving and shipping fuel. The company has been selling petroleum products for 30 years, buying directly from Russia's largest refineries, according to its website.

Ilsky refinery struck days earlier in the same region

The overnight strikes came two days after SBU drones struck the Ilsky oil refinery in the same region on 26 September, triggering fires near the ELOU-AVT unit and the tank farm. Ilsky is one of the largest refineries in Russia's Southern Federal District, with a design capacity of roughly 6.6 million tonnes of crude per year, and has been struck more than 18 times since the start of Russia's full-scale invasion.

Ukraine's sustained campaign against Russian fuel infrastructure has earlier pushed Russia's fuel shortages into Central Asia and forced Moscow to seek emergency refining deals abroad.