(ANSA-AFP) - SOFIA, 06 OTT - The crew of a ship that sank off Bulgaria following a drone attack "remains missing", Bulgarian Prime Minister Rumen Radev said on Tuesday. A boat that rushed to the scene discovered overturned life rafts and life jackets, but no members of the sunken ship's crew have been found so far, Radev told reporters, without specifying how many people were missing. Two ships were hit in drone attacks Tuesday off Bulgaria. (ANSA-AFP).