A Russian tanker was damaged in a Ukrainian drone attack in the Kerch Strait, briefly halting traffic on the strategic bridge linking Crimea to Russia on Saturday, a day after one of Moscow's warships was hit in the Black Sea.

The number of attacks in the Black Sea has increased from both sides since Moscow exited a deal last month that had allowed Ukrainian grain exports via the shipping hub during the conflict between the two countries.

The Russian tanker SIG was hit around 11:20 p.m. Friday south of the Kerch Strait, Russia's Federal Agency for Sea and Inland Water Transport said.