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TEHRAN — Iranian officials raised the death toll from an explosion in a packed mosque in southern Iran to 12 on Sunday and said more than 200 had been injured in the blast.
Iranian media initially quoted local officials as saying the explosion Saturday in Shiraz was caused by a homemade bomb and could have been religiously motivated.
But officials on Sunday said it was an accident possibly caused by ammunition left over from a recent military exhibition in the mosque.
