NEW : The defense minister confirms some deaths but does n't say how many . Images carried by About 18 people were reportedly on board when the blast happened . Comment: The Russian-built submarine has mostly sunk following the explosion and blaze .
NEW : The defense minister confirms some deaths but does n't say how many . About 18 people were reportedly on board when the blast happened . Comment: The Russian-built submarine has mostly sunk following the explosion and blaze .