Photos: Manhunt under way after dramatic showdown with Boston bombing suspects
Police officers searching Watertown, Mass. for a suspect in the Boston Marathon blasts
SWAT officers from suburban communities aid Boston police officers in keeping guard at the nearly deserted South Station area of Boston, Massachusetts, April 19, 2013, as the manhunt continues for Dzhokar Tsarnaev, the remaining suspect in the Boston Marathon bombings. Police killed one suspect in the Boston Marathon bombing, Tamerlan Tsarneav, in a shootout and mounted house-to-house searches for the second man, his brother Dzhokar Tsarnaev, on Friday, with much of the city under virtual lockdown after a bloody night of shooting and explosions in the streets.NEAL HAMBERG/Reuters
FBI agents escort Ruslan Tsarni, uncle of the Boston Marathon bombing suspects, second from right, into his home in Montgomery Village in Md. Friday, April, 19, 2013. The brothers, who came from a Russian region near Chechnya, lived together on Norfolk Street in Cambridge, Mass. They had been in the country for about a decade, according to an uncle, Ruslan Tsarni of Montgomery Village, Md.Jose Luis Magana/The Associated Press
An empty street is seen near the historic Faneuil Hall (on left, with white cupola) and City Hall (at back, in centre) in Boston, Massachusetts, April 19, 2013, as the manhunt continues for Dzhokar Tsarnaev, the remaining suspect in the Boston Marathon bombings.NEAL HAMBERG/Reuters
Police officers search homes for the Boston Marathon bombing suspects in Watertown, Massachusetts April 19, 2013.JESSICA RINALDI/Reuters
Bomb disposal specialists check out a car in Watertown, Massachusetts April 19, 2013 during a manhunt for suspects in the Boston Marathon bombing in this handout photo from Jennings Aske. Police killed one suspect during a shootout and mounted a house-to-house search for a second man in the suburb of Watertown.JENNINGS ASKE/onefundboston.org/Handout/Reuters
Police officers take position during a search for the Boston Marathon bombing suspects in Watertown, Massachusetts April 19, 2013. Police on Friday killed one suspect in the Boston Marathon bombing during a shootout and mounted a house-to-house search for a second man in the suburb of Watertown after a bloody night of shooting and explosions in the city's streets.BRIAN SNYDER/Reuters
A photograph of Djohar Tsarnaev, who is believed to be Dzhokhar Tsarnaev, a suspect in the Boston Marathon bombing, is seen on his page of Russian social networking site Vkontakte (VK), as pictured on a monitor and a mobile phone in St. Petersburg April 19, 2013. Tsarnaev posted links to Islamic websites and others calling for Chechen independence on what appears to be his page on the site. Police launched a massive manhunt for Tsarnaev, 19, after killing his older brother Tamerlan Tsarnaev in a shootout overnight.ALEXANDER DEMIANCHUK/Reuters
A police officer takes position during a search for the Boston Marathon bombing suspects in Watertown, Massachusetts April 19, 2013. Police on Friday killed one suspect in the Boston Marathon bombing during a shootout and mounted a house-to-house search for a second man in the suburb of Watertown after a bloody night of shooting and explosions in the city's streets.BRIAN SNYDER/Reuters
A law enforcement bomb technician prepares a controlled detonation of a suspicious object during a search for a suspect in the Boston Marathon bombing, in Watertown, Massachusetts April 19, 2013. Police on Friday killed one suspect in the Boston Marathon bombing during a shootout and mounted a house-to-house search for the second man in the suburb of Watertown after a bloody night of shooting and explosions in the city's streets.LUCAS JACKSON/Reuters
A law enforcement bomb technician is helped to put on his protective suit, before he set off a controlled detonation of a suspicious object during a search for a suspect in the Boston Marathon bombing, in Watertown, Massachusetts April 19, 2013. Police killed one suspect in the Boston Marathon bombing during a shootout and were engaged in a house-to-house search for a second man on Friday in the Boston suburb of Watertown after a bloody night of shooting and explosions in the city's streets.LUCAS JACKSON/Reuters
SWAT teams enter a suburban neighborhood to search for the remaining suspect in the Boston Marathon bombings in Watertown, Massachusetts April 19, 2013. Two Boston bomb suspects were named as brothers, Dzhokhar A. Tsarnaev, 19, and his brother Tamerlan Tsarnaev, 26, a U.S. national security official said on Friday. The official said the older brother died in a shootout with police and the younger one was being sought in a house-to-house search for in the Boston suburb of Watertown.JESSICA RINALDI/Reuters
Police officers keep a man on the ground in Watertown, Massachusetts April 19, 2013 following the shooting of a police officer at the Massachusetts Institute of Technology.BRIAN SNYDER/Reuters
Police officers secure a school building at the Massachusetts Institute of Technology near where a police officer was shot in Cambridge, Massachusetts April 18, 2013.KRISTYN ULANDAY/Reuters
Police officers secure a school building at MIT near where a police officer was shot in Cambridge, Massachusetts April 18, 2013.KRISTYN ULANDAY/Reuters
Police officers search around buildings at the Massachusetts Institute of Technology near where a police officer was shot in Cambridge, Massachusetts April 18, 2013.KRISTYN ULANDAY/Reuters
Police officers search around MIT buildings near where a police officer was shot in Cambridge, Massachusetts April 18, 2013.KRISTYN ULANDAY/Reuters
Police officers keep a man on the ground in Watertown, Massachusetts April 19, 2013 following the shooting of a police officer at the Massachusetts Institute of Technology.BRIAN SNYDER/Reuters
Police officers keep a man on the ground in Watertown, Massachusetts April 19, 2013 following the shooting of a police officer at the Massachusetts Institute of Technology.BRIAN SNYDER/Reuters
Police officers keep a man on the ground in Watertown, Massachusetts April 19, 2013 following the shooting of a police officer at the Massachusetts Institute of Technology.BRIAN SNYDER/Reuters
A police officer points his rifle at a man on the ground in Watertown, Massachusetts April 19, 2013, following the shooting of a police officer at the Massachusetts Institute of Technology.BRIAN SNYDER/Reuters
Heavy armed police officers arrive at the scene of a police manhunt in Watertown, Massachusetts April 19, 2013, following the shooting of a police officer at the Massachusetts Institute of Technology.BRIAN SNYDER/Reuters
Law enforcement officers talk at the scene of a police manhunt in Watertown, Massachusetts April 19, 2013, following the shooting of a police officer at the Massachusetts Institute of Technology.BRIAN SNYDER/Reuters
A vehicle carrying officers in tactical gear arrives at the Watertown neighbourhood of Boston, April 19, 2013.Julio Cortez/The Associated Press
Superintendent and Colonel of the Massachusetts State Police Timothy P. Alben speaks to reporters about the status of the two suspects in the Boston Marathon bombings in Watertown, Massachusetts April 19, 2013.JESSICA RINALDI/Reuters
A suspect wanted for questioning in relation to the April 15 Boston Marathon bombing is seen in a handout photo released through the Boston Police Department Twitter page, April 19, 2013.Boston Police Department/Reuters
Police officers aim their weapons April 19, 2013, in Watertown, Mass.Matt Rourke/The Associated Press
Law enforcement officials are seen during a search for the two men suspected of setting off two explosions during the Boston Marathon, April 19, 2013.LUCAS JACKSON/Reuters
A law enforcement official checks his rifle during a search for the two men suspected of setting off two explosions during the Boston Marathon, April 19, 2013.LUCAS JACKSON/Reuters
Law enforcement officials stage in a parking lot during a search for the two men suspected of setting off two explosions during the Boston Marathon, April 19, 2013.LUCAS JACKSON/Reuters
A law enforcement official stands with his rifle during a search for the two men suspected of setting off two explosions during the Boston Marathon, in Watertown, Massachusetts, April 19, 2013.LUCAS JACKSON/Reuters
A law enforcement vehicle carries a bomb disposal device through Watertown during a search for the two men suspected of setting off two explosions during the Boston Marathon, April 19, 2013.LUCAS JACKSON/Reuters
A police officer rides in the back of a van with his weapons out April 19, 2013, in Watertown, Mass.Matt Rourke/The Associated Press