Updated

Officials say a cargo ship has collided with a tanker during a storm in the Black Sea and sunk, leaving five sailors missing.

Navy vessels and helicopters were searching for the missing off Bulgaria on Tuesday.

The Transport Ministry says the Sierra Leone-flagged cargo ship Karam 1 sank late Monday after colliding with the Dutch tanker Alessandro DP, 10 miles (16 kilometers) off Cape Emine.

Five sailors of the cargo ship's of crew of nine Syrians and an Egyptian were rescued and five are missing.

The cargo ship was loaded with scrap metal en route to Istanbul, while the tanker was empty and heading to the nearby Bulgarian port of Varna.