The incident took place near Sochi, Russia's popular resort city on the Black Sea coast
A Liberia-flagged vessel carrying oil, with a crew of 23 Indian nationals, came under attack by drone boats off Russia's Black Sea coast, Russian authorities said.
"The crew has been saved and evacuated to shore," a spokesman for the Russian transport ministry told state-run TASS news agency.
The Aframax Rio tanker came under attack on Tuesday by unmanned surface vessels (USVs), and open fire is raging in the Black Sea waters, the Russian transport ministry said.
The ministry said the vessel's all Indian crew of 23 was saved and none was hurt according to preliminary data.