A Russian drone struck the central building of Ukraine’s Security Service (SBU) on Volodymyrska Street in central Kyiv on September 4, injuring 12 people, according to Ukrainian officials.

The strike hit the SBU’s central headquarters directly opposite St. Sophia’s Cathedral, one of Kyiv’s best-known historic landmarks.

Kyiv Mayor Vitali Klitschko said nine of the injured were hospitalized, with two in serious condition.

Drone targeted SBU chief’s office

Ukrainian President Volodymyr Zelenskyy said the drone was directed toward the office of SBU chief Oleksandr Poklad inside the building.

The SBU confirmed that the strike was deliberately aimed at Poklad’s office, but said he was not injured.

Zelenskyy said he had ordered Poklad to prepare a “meaningful” and, if possible, symmetrical response to the Russian attack, with Ukraine’s military supporting the operation.

Later, Zelenskyy said Ukraine had already determined the "geography" of its response and would choose the timing based on when it could achieve an effective result.

Ukrainian Foreign Minister Andrii Sybiha called the strike on the SBU headquarters “major escalation that demands resolute responses,” saying it showed Moscow’s rejection of diplomacy during a renewed push for peace.

Kyiv faces near-daily Russian drone attacks

The strike occurred in the middle of the day in one of central Kyiv’s busiest areas, with large numbers of civilians and vehicles on nearby streets, according to Euromaidan Press sources on the ground.

The attack came amid a sustained Russian campaign of drone attacks on Kyiv and the surrounding oblast, with the capital repeatedly targeted by large waves of jet-powered Geran drones and other weapons.

The attacks have increasingly brought explosions, fires and falling debris to residential and civilian areas across the capital and its suburbs, forcing emergency crews to respond repeatedly as the city remains under a persistent aerial threat.

Russia’s new models of Geran drones, developed from Iranian-designed Shaheds, are harder for Ukrainian air defenses to intercept. Moscow is deploying them in growing numbers, increasing the chances that drones reach Ukrainian cities and intensifying the threat to civilians.

Building damaged and fire breaks out

The drone strike caused a fire in the building, which emergency crews later extinguished.

Klitschko said sections of the building’s ceiling and an exterior wall were destroyed. Emergency services remained at the scene after the fire was brought under control.

The SBU said the damaged headquarters would be restored.

The agency also vowed that Russia would face a response through further Ukrainian operations, including strikes against Russian assets and networks.

Historic Sofia Kyivska complex damaged

The Russian strike also damaged a building within the National Conservation Area “Sofia Kyivska,” located directly across Volodymyrska Street from the SBU headquarters, according to Suspilne.

According to the reserve’s director general Nelia Kukovalska, the blast shattered windows and destroyed the glass entrance structure of the complex’s Consistory building, whose exterior faces Volodymyrska Street.

No one at the reserve was injured, as staff and visitors took shelter. The historic St. Sophia Cathedral itself was not damaged, according to Kukovalska.

The nearby Zavertailo bakery was also damaged, though all staff and customers survived after taking shelter in the basement.

Ukrainian drones set fire to two fuel depots around Sochi and hit a Russian air defense position overnight on 4 September, according to monitoring channels. They also reported that drones struck an explosives factory and a petrochemical plant in Bashkortostan the same night, more than a thousand kilometers from Ukraine. Russian officials acknowledged the depot fire and said nothing about the air defense site.

Two depots burned behind their anti-drone screens

Astra's OSINT analysts geolocated the fires to the Rosneft-Kubannefteprodukt depot in Sochi's Adler district and to the Lukoil-Yugneftprodukt depot on the federal territory of Sirius. Sochi mayor Andrei Proshunin confirmed a fire at a depot. The regional operational headquarters claimed there were no casualties. Sochi is a Russian resort city on the eastern Black Sea coast, about 600 km from the frontline in Ukraine.

The Ukrainian OSINT channel Cyberboroshno identified one of the hit sites as the BATO aviation fuel terminal, which fuels aircraft at airports across Krasnodar Krai. Every tank there stood behind purpose-built protective structures, Militarnyi reported, and the Lukoil site holds 12 tanks with a combined volume of about 8,400 m³. The burning depot sits roughly 100 meters from Sochi international airport, Russia's fifth-busiest by passenger traffic in 2024, the Russian outlet Agentstvo found.

Panoramic imagery from this year shows anti-drone netting around the tanks at both depots. Two days before the strikes, Russian Deputy Prime Minister Aleksandr Novak claimed Russian refineries were better protected than those in the UAE, and Russian President Vladimir Putin said their protection level was now completely different.

An air defense position caught fire near the Abkhazia border

Astra analyzed eyewitness footage and placed a detonation and fire at a launch position near the settlement of Sirius, by the Psou river on the Abkhazia border, where an S-300 or S-400 system is based. The Ukrainian monitoring channels Exilenova+ and Supernova+ said drones struck the air defenses directly. Russia's Defense Ministry and local authorities reported nothing about it.

Drones had tried the same area in May. A Ukrainian sea drone struck the Russian supply vessel Nefrit at Sochi port the previous day.

Explosives and petrochemicals hit in Bashkortostan

Drones reached Sterlitamak on the morning of 4 September, hitting the Avangard plant and the Sterlitamak Petrochemical Plant, footage published by Supernova+ shows. Residents reported a series of explosions, and one man said on video that about a dozen drones had already flown toward the petrochemical works. The frames show Ukrainian FP-1 strike drones. 

 Russia's Defense Ministry claimed it downed 490 drones overnight across several regions, occupied Crimea, and the Black Sea.