Boston Marathon Bombing

Anonymous Source: Bombing Suspect Says Motivation Was Wars in Afghanistan, Iraq

Shot in the throat, Tsarnaev communicating with authorities via notes

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The 19-year-old suspect in the Boston Marathon bombings has told interrogators that the American wars in Iraq and Afghanistan motivated him and his brother to carry out the attack, according to U.S. officials familiar with the interviews.

From his hospital bed, Dzhokhar Tsarnaev has acknowledged his role in planting the explosives near the marathon finish line on April 15, the officials said. The first successful large-scale bombing in the post-Sept. 11, 2001, era, the Boston attack killed three people and wounded more than 250 others.