A civilian ship linked to Russia’s state nuclear corporation Rosatom sank in the Black Sea after what was described as a Ukrainian drone attack, according to remarks attributed to the company’s chief on Aug. 1.

The reported incident involved two drones that struck the vessel during the night, Rosatom head Alexei Likhachev said. Based on the limited information available, the ship was identified as a civilian vessel owned by the Russian state company.

The sinking adds to concerns about maritime security in the Black Sea, where military activity and drone warfare have continued to affect shipping routes and vessels operating near the conflict zone. The latest report suggests that even non-military craft remain exposed to the wider risks created by the war.

No broader details were immediately clear from the initial account, including further information about the ship’s mission or any consequences beyond the loss of the vessel. The report nevertheless points to another escalation in the use of drones in the Black Sea theater.