A commercial ship sank and its crew disappeared Tuesday following what appeared to be a coordinated attack involving aerial and maritime drones off the coast of NATO member Bulgaria. Ukrainian President Volodymyr Zelenskyy blamed Russia and warned that Moscow could be preparing a broader “massive strike.”
A second commercial vessel was seriously damaged and caught fire inside Bulgaria’s exclusive economic zone. Drone specialist Cameron Chell said the simultaneous precision attacks represented a dangerous escalation and may point to a broader Russian “invasion posture.”
“They were likely using the Geran-4 aerial drone to take the vessel out or the Maran surface vehicle to take it out,” Cameron Chell, founder of drone maker Draganfly, told News Media on Tuesday while discussing the first strike.
The two attacks took place about 70 nautical miles from Byala, a town on Bulgaria’s eastern coast, according to Reuters. The incident marks a direct expansion of the conflict into the economic zone of a NATO member. (REUTERS/Petko Momchilov TPX IMAGES)
“The reason it wasn’t just an air vehicle or an air drone that took this ship out was that the Gerans generally come in at a pretty steep angle when they’re on final attack,” Chell said.
He said there are few precision drones capable of flying close to the water’s surface, where a strike would likely have been necessary to damage the vessel severely enough to sink it rapidly.
“The nature of this strike suggests there was a combination of an air attack and surface attack,” Chell said.
Reuters reported that the attacks occurred roughly 70 nautical miles off Byala on Bulgaria’s eastern shoreline, placing the incident inside the exclusive economic zone of a NATO country.
Zelenskyy said Ukrainian intelligence and security agencies were working to establish exactly what happened and gather all available details.
“Our intelligence and special services are now working to establish all available information about yet another attack in the Black Sea targeting civilian vessels,” he wrote on X.
“Our Navy contacted its counterparts in Bulgaria, and it has been established that this was a combined Russian attack using maritime and aerial drones.”
Chell said the attack’s location and use of multiple drone platforms could help Russia deepen uncertainty and instability across the Black Sea region.
“We can see the amount of geopolitical chaos that’s involved, and this is exactly the type of thing that would benefit Russia in the region,” Chell said.
“The hybrid element here is really blurring the lines between traditional military actions,” he said, calling the operation “an expansion of strategy and tactics.”
“This is indicative of this larger invasion posture that seems to be unfolding for Russia,” Chell said. “And a real desire, what appears to be, for Russia to take things up a notch.”
In this pool photograph distributed by the Russian state news agency Sputnik, Russian President Vladimir Putin meets with U.S. special envoy Steve Witkoff and Jared Kushner, the son-in-law of U.S. President Donald Trump, in Moscow on Sept. 5, 2026. (Gavriil GRIGOROV / POOL / AFP via Getty Images)
Bulgarian Prime Minister Rumen Radev confirmed that aerial and maritime drones had struck two commercial ships traveling through shipping lanes within Bulgaria’s EEZ. He described the incident as a “gross, flagrant violation of international law,” Reuters reported.
The vessel that sank was identified by the British maritime risk consultancy Vanguard as the cargo ship Alfa Watan. It sustained catastrophic structural damage before disappearing beneath the water with an undisclosed cargo and an unknown number of crew members aboard.
The Bulgarian ferry Dioscuria changed course and headed toward the scene after its crew saw an explosion and received distress calls, according to Reuters.
Rescue teams recovered an overturned lifeboat, life rafts and life jackets floating among the wreckage.
The sunken vessel, identified by British maritime risk group Vanguard as the cargo ship Alfa Watan, suffered catastrophic structural damage before submerging with an undisclosed cargo and an unknown number of crew members aboard. (YORUK ISIK/Handout via REUTERS)
Search-and-rescue operations involving the Bulgarian Navy, Air Force and Border Police remained underway to locate the missing crew and monitor for environmental threats, the outlet said.
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Chell suggested the apparent coordination between the attacks was particularly significant.
“Not only are you using pretty sophisticated equipment, but you’re also doing it in a coordinated manner,” Chell said.
“These two ships were going opposite directions. One was actually just coming, and had left Ukraine the day before,” he said.
“These things coordinated and were struck relatively at the same time. So another level of coordination has unfolded here,” Chell added.
The second ship, identified by Vanguard as the general cargo vessel ABLE, caught fire after being struck while carrying grain. (Tony Hogwood/Handout via REUTERS)
The second ship, identified by Vanguard as the general cargo vessel ABLE, caught fire after being struck while carrying grain.
A Bulgarian ferry crew evacuated all 18 seafarers aboard — 11 Turkish nationals and seven Indian nationals.
Two crew members suffered severe injuries and were airlifted to a medical facility in Varna, while the remaining 16 were transported safely to shore.
Radev convened an emergency government session following the strikes. While acknowledging it remained unclear whether the drones originated from Russia or Ukraine, he warned of the widening scope of the war.
“Such an attack within the Bulgarian exclusive economic zone is absolutely unacceptable,” Radev told reporters.
Search-and-rescue operations involving the Bulgarian Navy, Air Force and Border Police remained underway to locate the missing crew and monitor for environmental threats, the outlet said. (REUTERS/Petko Momchilov TPX IMAGES )
“If this war is not ended in time, it will continue to expand its spatial scope and increase the risk of even a global conflict.”
Chell said striking the two ships inside Bulgaria’s exclusive economic zone could also have the effect of disrupting a crucial shipping corridor and creating fear among commercial operators.
“It all adds up to a perfect little scenario for the Russians to create chaos there, not just to disrupt the lane of economics for the region and in particular for Ukraine — a lifeline,” Chell said.
“The Russians are really taking a playbook out of the Iranians who have basically created enough chaos in the Strait of Hormuz where the operators can’t take the chance to put their ships through there,” he added.
The strikes came amid a surge in attacks on commercial shipping in the Black Sea, including an incident off Romania’s coast Monday in which two people died in a ship fire.
Ambrey, a British firm specializing in global maritime risk, recorded more than 210 strikes on commercial ships between July and the end of September.
Small ground devices form part of an expanding “mesh” network that allows Russian drones and repeaters to relay encrypted signals across multiple connections, making drones far harder to disrupt. (Photo by Genya SAVILOV / AFP via Getty Images)
Zelenskyy later warned that Ukrainian intelligence had obtained information indicating Russia was preparing a major new assault.
“We’ve got updated intel on Russia’s preparations for a massive strike,” Zelenskyy wrote on X. “I ask you, please, to take care of yourselves and respond to missile threat alerts.”
“Ukrainian services and our Air Force are ready to respond — as much as our defenses allow,” Zelenskyy continued. “And a lot depends on our partners — every country in the world that has the defensive capabilities we need and can provide them to us.”
“It’s very important that there be the political will to do this — particularly in the United States and in Europe,” he added.