July 21 (Reuters) - A Liberian-flagged vessel sailing from Egypt to Ukraine has been hit ‌off Romania's coast in an attack likely ‌linked to Russia's war on Ukraine, Romanian President Nicusor Dan ​said on Tuesday.

This year, Russian and Ukrainian drones have repeatedly breached the airspace and territorial waters of Romania, officials in the European Union and ‌NATO member state ⁠neighbouring Ukraine have said.

"Last night, the LPG Gas Lisbon, a Liberian-flagged vessel, was ⁠hit outside Romanian territorial waters, approximately 20 nautical miles (40 km) off the Romanian coast," Dan wrote ​on X.

Dan ​said Romanian rescuers had ​evacuated the crew, including ‌three injured members, and a tugboat had been dispatched to ensure the vessel did not drift and pose a danger to navigation.

"State institutions are on alert and will clarify the circumstances, ‌causes and responsibilities related to ​this serious incident, most likely ​part of the ​illegal war of aggression of the ‌Russian Federation against Ukraine," Dan ​said.

Russia, which ​launched a full scale invasion of Ukraine in 2022, has either denied responsibility for reported ​attacks on ‌Romania, said they were carried out by ​Ukraine, or blamed Ukrainian "provocation".

(Reporting by Anna Wlodarczak-Semczuk; ​Editing by Philippa Fletcher)