A Ukrainian attack on 4 July targeted a key Russian defense facility in the city of Azov, Rostov Oblast, about 200 km from the frontline. The Azov Optic-Mechanical Plant, which manufactures critical electronic components for Russian missiles and armored vehicles, was hit by multiple drones in a bold daylight assault. The extent of the damage is currently unknown.

Morning drone strike hits Azov military facility

According to Militarnyi, the attack occurred on the morning of 4 July when Ukrainian strike drones launched an assault on the Azov Optic-Mechanical Plant, part of Russia’s Tactical Missile Armament Corporation.

Social media footage showed fixed-wing UAVs diving toward the site, followed by explosions and visible smoke. One of the drones bore a delta-wing “Shahed-like” structure, suggesting the use of an unknown new UAV model.

The original Shaheds are Iranian-designed long-range explosive drones that Russia uses in its daily attacks on Ukrainian cities. They are easily recognizable by their rounded nose and triangular, delta-shaped wings.

Witness footage and drone type

Ukrainian Telegram channel Exilenova+ posted an image, showing a delta-wing drone with the caption:

“Rostov. Likely a new UAV from Ukraine’s Defense Forces.”

Later, the same channel shared videos capturing different UAV types, including a well-known Ukrainian drone and a delta-wing aircraft believed to be a new model.

“Azov was attacked by several types of birds,” Exilenova+ commented. “We see an FP-1 pass over, and then, probably, the strike of that same ‘new’ drone.”

Militarnyi noted that “Delta-wing drones are fairly common, but they are rarely used by those attacking the aggressor country. What specific model was used remains unknown at this time.”

At least 10 drones

Russian authorities initially claimed their air defense forces intercepted the drones. Russian Telegram channel Astra reported that at least ten UAVs or their debris “fell” on the factory grounds. The local emergency services confirmed the site was impacted on 4 July.

Yury Slyusar, acting governor of Rostov Oblast, stated that evacuation efforts were underway due to widespread damage from UAV debris, claiming that the attack damaged residential buildings. While initial reports suggested no injuries, Slyusar had also stated that one woman killed in the overnight attack.

The Russian Ministry of Defense claimed  that air defenses downed 26 drones over Rostov Oblast overnight on 4 July. In Shakhty, a UAV strike allegedly caused a transformer substation to shut down, leaving around 2,000 homes — with more than 6,000 residents — without power. Buildings near the substation also suffered window damage.

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Ukrainian drones strike Russian plant making Shahed warheads near Moscow

Targeted facility and its military role

The Azov Optic-Mechanical Plant is a core producer of high-precision electronics, optical, and thermal imaging equipment for Russia’s military. As detailed by Exilenova+, it manufactures lenses, prisms, radar homing heads, and control systems used in tanks, infantry fighting vehicles, naval systems, and aircraft.

Ukraine’s Center for Countering Disinformation, under the National Security and Defense Council, confirmed the strike. Its head, Andrii Kovalenko, emphasized that the plant produces “eyes” for Russian military hardware, including fire control systems and rangefinders. He stated,

“Despite a difficult night (a reference to Russia’s massive missile and drone attack on Kyiv, – Ed.), there is good news. In Russia, targets were hit in Moscow and Rostov oblasts. The Azov Optic-Mechanical Plant was struck.”

The facility has been under US sanctions since March 2022 due to its role in the Russian war effort. It is also sanctioned by Canada, Switzerland, the European Union, New Zealand, and Ukraine. The Ukrainian Defense Intelligence’s War & Sanctions project has identified foreign-origin components at the site, including machinery from Taiwan, South Korea, and Switzerland.

Ukrainian drones struck a critical military-linked facility in Russia’s Moscow Oblast that produces thermobaric warheads for Shahed drones, the Ukrainian General Staff reported on 4 July. The strike ignited a fire and caused visible black smoke, while Russian local authorities acknowledged drone-related damage in the area.

Ukrainian drones target war-linked facility

According to the General Staff of the Armed Forces of Ukraine, units from the Unmanned Systems Forces, together with other Defense Forces, hit the JSC “Scientific Research Institute of Applied Chemistry” in Sergiev Posad, Moscow Oblast.

The report emphasized that the facility is currently involved in the production of thermobaric warheads for Shahed-type UAVs and plays a vital role in Russia’s ongoing war against Ukraine.

“It is confirmed that our strike assets reached the target directly. A fire and heavy smoke were recorded in the area of the facility,” the Ukrainian military stated.

The effects of the strike are still being assessed, according to the report.

Fires and explosions in Sergiev Posad

On the morning of 4 July, Oksana Yerokhanova, head of the Sergiev Posad city district, confirmed that drones had attacked the town. She reported that a fire broke out at an electrical substation, leaving six neighborhoods without power.Yerokhanova also reported that two men were allegedly injured during the incident.

Geolocation confirms strike on key industrial site

Ukrainian Telegram channel ExileNova+ geolocated the black smoke column to Substation No. 94 “Zagorsk” (110/35/6 kV), believed to be part of the “Scientific Research Institute of Applied Chemistry.”

Additional footage shared by Exilenova+ shows Liutyi drones flying past the smoke column and striking separate locations.

Despite claiming the destruction of 48 drones overnight, the Russian Ministry of Defense did not mention any incidents in Moscow Oblast in its public statements.