Boston Marathon Suspect Has Been Caught

After a final standoff with police and five days of spreading fear in Boston and the nation, suspected Boston Marathon bomber Dzhokhar Tsarnaev was apprehended this evening in Watertown, Massachusetts. He was found hiding in a boat parked in woman's driveway. She had found a trail of blood and alerted police, who now confirm that Dzhokhar, bloody from last night's fire fight with police and disoriented from the flash grenades the SWAT team used to subdue him this evening, is being taken to a local hospital.

Nineteen-years-old, Tsarnaev is accused of setting off the bombs that killed three people and injured 176 during Monday's Boston Marathon. Born in Dagestan, Tsarnaev became a naturalized U.S. citizen last year, on September 11, after living here for ten years with his Chechen family, including his older Tamerlan, who died last night and was also a suspect.

It's unclear what motivated the brothers to allegedly set off pressure cooker bombs at one of the world's most well-known sporting events. The younger Dzhokhar was well-liked in high school, where he excelled in both academics and wrestling, and though he was struggling at UMASS Dartmouth, there was no indication he was growing dissatisfied with life here. Tamerlan may have been a different story.

According to reports, the elder brother said in 2010 that he wanted to box competitively for the United States in the Olympics, rather than his native Russia, but Tamerlan Tsarnaev also once told a reporter, "I don't have a single American friend. I don't understand them."

Now millions of Americans are trying to understand how -- and why-- this all happened.