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Despite a serious throat wound that prevents him from speaking, the surviving Boston Marathon bombing suspect is beginning to respond to questions from investigators, federal officials tell NBC News.

Nearly 48 hours after he was taken into custody following an intense gunbattle and manhunt, Dzhokhar Tsarnaev, 19, was responding to a special team of federal investigators brought in to question him, mostly in writing because of the wound, according to the officials, who spoke on condition of anonymity.

http://usnews.nbcnews.com/_news/2013...questions?lite