Up to 100 Israeli hostages, including women and children, may have been taken into Gaza by Hamas, hugely complicating any Israeli military operation to free them, the media reported. Amid images of terrified Israeli civilians and soldiers — some bloodied, others hooded and with their hands tied — being marched away by Hamas militants, the whereabouts and fate of the captives has become one of the most pressing issues for military planners, the Guardian reported.