Photos: Manhunt in Massachusetts for Boston Marathon bombing suspects

Issues

1 Police work a crime scene Friday, April 19, 2013, in Watertown, Mass. 
2 Police with guns drawn search for a suspect on April 19, 2013 in Watertown, Mass. 
3 Police officers walk near a crime scene Friday, April 19, 2013, in Watertown, Mass. A tense night of police activity that left a university officer dead on campus just days after the Boston Marathon bombings and amid a hunt for two suspects caused officers to converge on a neighborhood outside Boston, where residents heard gunfire and explosions. 
4 Police in tactical gear arrive on an armored police vehicle as they surround an apartment building while looking for a suspect in the Boston Marathon bombings in Watertown, Mass., Friday, April 19, 2013. 
5 This image provided by the Boston Regional Intelligence Center shows Dzhokhar A. Tsarnaev, one of the suspects in the Boston Marathon bombings. Authorities say Tsarnaev is still at large after he and another suspect -- both identified to The Associated Press as coming from the Russian region near Chechnya -- killed an MIT police officer, injured a transit officer in a firefight and threw explosive devices at police during their getaway attempt in a long night of violence into the early hours of Friday, April 19, 2013. The second suspect was killed in a shootout with police. 
6 Police in tactical gear conduct a search for a suspect in the Boston Marathon bombings, Friday, April 19, 2013, in Watertown, Mass. 
7 Metro SWAT members hang off the back of a truck as they prepare to search the School and Walnut Street neighborhood for one remaining suspect on April 19, 2013 in Watertown, Mass. 
8 Members of a SWAT team search for 19-year-old bombing suspect Dzhokhar A. Tsarnaev on April 19, 2013 in Watertown, Mass. 
9 Boston Police Commissioner Edward Davis speaks during a media briefing in the parking lot of the Watertown Mall on April 19, 2013 in Watertown, Mass. 
10 Onlookers take pictures as they watch from windows while SWAT team members search for one remaining suspect at a neighboring apartment building on April 19, 2013 in Watertown, Mass. 
11 People watch as SWAT team members search for 19-year-old bombing suspect Dzhokhar A. Tsarnaev on April 19, 2013 in Watertown, Mass. 
12 A neighbor is escorted to safety as police surround a home while searching for a suspect in the Boston Marathon bombings in Watertown, Mass., Friday, April 19, 2013. 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. 
13 Ruslan Tsarni, uncle of the suspected Boston Marathon bombing suspects, speaks to reporters in front of his home April 19, 2013 in Montgomery Village, Md. Tsarni asked the still at large bombing suspect Dzhokhar Tsarnaev to turn himself in. 
14 SWAT team members go door-to-door searching for 19-year-old Boston Marathon bombing suspect Dzhokhar A. Tsarnaev on April 19, 2013 in Watertown, Mass. 
15 Law enforcement officers approach an area where a suspect is hiding on Franklin Street on April 19, 2013 in Watertown, Mass. After a car chase and shootout with police, one suspect in the Boston Marathon bombing, Tamerlan Tsarnaev, 26, was shot and killed by police early April 19, and a manhunt is underway for his brother and second suspect, 19-year-old Dzhokhar A. Tsarnaev. The two men are suspects in the bombings at the Boston Marathon on April 15 that killed three people and wounded at least 170. 
16 This still frame from video shows Boston Marathon bombing suspect Dzhokhar Tsarnaev visible through an ambulance after he was captured in Watertown, Mass., Friday, April 19, 2013. A 19-year-old college student wanted in the Boston Marathon bombings was taken into custody Friday evening after a manhunt that left the city virtually paralyzed and his older brother and accomplice dead. 
17 An estimated 200 people pour onto Hemingway Street in the Fenway neighborhood of Boston to celebrate the announcement of the capture of the second Boston Marathon bombing suspect on April 19, 2013. A manhunt for Dzhokhar A. Tsarnaev, 19, ended Friday evening with his capture on a boat parked on a residential property in Watertown, Mass. His brother Tamerlan Tsarnaev, 26, the other suspect, was shot and killed by police early Friday after a car chase and shootout with police. The bombing killed three people and wounded at least 170. 
18 A police officer reacts to news of the arrest of one of the Boston Marathon bombing suspects, Friday, April 19, 2013, in Boston. Boston Marathon bombing suspect Dzhokhar Tsarnaev was captured in Watertown, Mass. The 19-year-old college student wanted in the bombings was taken into custody Friday evening after a manhunt that left the city virtually paralyzed and his older brother and accomplice dead.