Agents of the FBI and Bureau of Alcohol, Tobacco, Firearms and Explosives check suspect Dzhokhar Tsarnaev for explosives and give him medical attention after his capture in Watertown, Mass. Mr. Tsarnaev is hospitalized in serious condition under heavy guard as investigators continue probing last week's bombings at the Boston Marathon and the roles of Mr. Tsarnaev and his brother, Tamerlan.
** FILE ** Agents of the FBI and Bureau of Alcohol, Tobacco, Firearms and Explosives check suspect Dzhokhar Tsarnaev for explosives and give him medical attention after his capture in Watertown,
** FILE ** Tamerlan Tsarnaev smiles after accepting the trophy for winning the 2010 New England Golden Gloves Championship in Lowell, Mass., on Feb. 17, 2010. The 26-year-old boxer, who had been known to the FBI as Suspect No. 1 in the Boston Marathon explosions and was seen in surveillance footage in a black baseball cap, was killed overnight on Friday, April 19, 2013, officials said. (AP Photo/The Lowell Sun, Julia Malakie)
** FILE ** Tamerlan Tsarnaev smiles after accepting the trophy for winning the 2010 New England Golden Gloves Championship in Lowell, Mass., on Feb. 17, 2010. The 26-year-old boxer, who had been known to the FBI as Suspect No. 1 in the Boston Marathon explosions and was seen in surveillance footage in a black baseball cap, was killed overnight on Friday, April 19, 2013, officials said. (AP Photo/The Lowell Sun, Julia Malakie)
A police officer and a Federal Bureau of Investigation agent run as they conduct a search for a suspect in the Boston Marathon bombings, Friday, April 19, 2013, in Watertown, Mass. The two suspects in the Boston Marathon bombing killed an MIT police officer and hurled explosives at police in a car chase and gun battle overnight that left one of them dead and his brother on the loose, authorities said Friday as thousands of officers swarmed the streets in a manhunt that all but paralyzed the Boston area. (AP Photo/Matt Rourke)
Heavily armed FBI agents gather next door to 410 Norfolk Street in Cambridge, Mass., Friday, April 19, 2013. Two suspects in the Boston Marathon bombing killed an MIT police officer, injured a transit officer in a firefight and threw explosive devices at police during a getaway attempt in a long night of violence that left one of them dead and another still at large Friday, authorities said as the manhunt intensified for a young man described as a dangerous terrorist. (AP Photo/Michael Dwyer)
** FILE ** In this Feb. 17, 2010, photo, Tamerlan Tsarnaev, left, smiles after accepting the trophy for winning the 2010 New England Golden Gloves Championship from Dr. Joseph Downes, right, in Lowell, Mass. Tsarnaev, 26, who had been known to the FBI as Suspect No. 1 in the Boston Marathon Explosions and was seen in surveillance footage in a black baseball cap, was killed overnight on Friday, April 19, 2013, officials said. (AP Photo/The Lowell Sun, Julia Malakie)
**FILE** Tamerlan Tsarnaev smiles after accepting the trophy for winning the 2010 New England Golden Gloves Championship in Lowell, Mass., on Feb. 17, 2010. The 26-year-old boxer, who had been known to the FBI as Suspect No. 1 in the Boston Marathon explosions and was seen in surveillance footage in a black baseball cap, was killed on April 19, 2013, officials said. (Associated Press/The Lowell Sun)
The FBI has released a clearer image of Suspect No 2 in the Boston bombings, Dzhokhar A. Tsarnaev, age 19. (Courtesy of the FBI)
