A Turkish-flagged cargo ship struck a mine in the Black Sea off the Romanian coast today, causing limited damage, Reuters news agency reported, stressing that the crew is safe.

British insurer Ambrey, citing well-informed sources, said the ship struck a sea mine 11 nautical miles north of the coast of Sulina, Romania.

The explosion occurred around 12:20 p.m. The ship anchored to assess the damage and resumed its journey three hours later, according to Ambrey.

The Black Sea has been designated a “high risk zone” by insurance companies, as sea mines pose a danger to navigation.

A Ukrainian government official confirmed the ship hit a mine, without being able to say for sure if it was linked to the war in Ukraine or was from the Second World War era.

Turkish analyst Yoruk Isik told Reuters the accident involved the cargo ship Kafkametler, which sustained limited damage to one of its ballast tanks, but the crew members were safe and sound.

The Istanbul-based ship-owning company did not respond to a Reuters request for comment.

The cargo ship Kafkametler was anchored in the Danube Canal near the Ukrainian terminal of Vilkovo, according to MarineTraffic data at 11:20 p.m.

The British insurance company Ambrey notes that it had informed its clients about “possible scattering of mines by the Russian navy” in order to “impede Ukrainian grain exports”.