21.   Habibubullah Allahyar, a senior official at the Afghan consulate in Quetta, Pakistan, said it was not known what triggered the initial blast.

22.   However, they have not yet determined whether the initial blast was caused by a flaw in the torpedo or a collision.

23.   It quoted them as saying at hospitals in southeastern Turkey where they were being treated that there were other explosions after the initial main blast.

24.   It was the first sign that anyone had survived the initial blasts that tore apart the submarine and sank it in the Barents Sea.

25.   It was the first sign that anyone had survived the initial blasts that tore apart the submarine and sunk it in the Barents Sea.

26.   It was not immediately clear if the shop where the initial blast occurred was a legal business.

27.   It was not immediately clear what was the cause of the initial blast.

28.   Officials say an explosion of a practice torpedo led to the detonation of combat weapons in the bow, but have not determined what caused the initial blast.

29.   Other tanks exploded after the initial blast, but Barabara knew of no more casualties.

30.   Russian officials say an explosion of a practice torpedo led to the detonation of combat weapons in the bow, but have not determined what caused the initial blast.