'We got him!' Wounded fugitive marathon 'bomber' captured after he was found hiding in a BOAT in backyard of Boston home. Cops use flash-bang grenades to flush him out

Police captured Dzhokhar Tsarnaev, 19, on Friday night after a day-long manhunt using helicopters and heavily armed officers in a Boston suburb

Apprehended 'covered in blood and hiding in a covered boat in Watertown by homeowner who ventured out after curfew was lifted'

He and law enforcement officers engaged in a furious exchange of gun-fire that began shortly after 7pm

Over 30 rounds were fired in the exchange - as terrified residents of Franklin Street were evacuated by police



The stand-off continued until approximately 8.45 p.m. when Boston police announced on Twitter that Tsarnaev had been apprehended

Tsarnaev reportedly surrendered himself to police having been shot twice

He was rushed to Beth Israel Deaconess Medical Center where many marathon victims are being treated

He was said to be 'clinging to life' this morning

His Miranda rights have been revoked and he is being treated as an exception due to national security

Residents were warned to stay indoors amid gunfire, flash-bang explosions and tear gas

On his arrest - jubilant crowds took to the streets of Boston to thank police, FBI and law enforcement officials - chanting 'USA!'

Tamerlan Tsarnaev, 26, killed after explosions and machine gun fire on Thursday night



Both suspects are brothers from the Russia region near Chechnya and had lived in U.S. since 2002






The Massachusetts college student wanted in the Boston Marathon bombing was captured wounded but alive after hiding out in a boat parked in a backyard on Friday evening.



The arrest of Dzhokhar Tsarnaev, 19, signaled the end of five days of terror set-off by the double bombing at the marathon finish line.



The mayor of Boston, Thomas Menino, was quoted by the Boston Globe as taking to the police scanner to exclaim, 'We got him'.

'I have never loved this city and its people more than I do today. Nothing can defeat the heart of this city .. nothing.'



Relieved law enforcement officers began cheering and clapping after Dzhokhar Tsarnaev was arrested a nd thousands of jubilant members of the public took to the streets to salute their hard work.



The terror suspect is now said to be 'clinging to life' at Beth Israel Deaconess Medical Center - where some marathon bombing victims are also still being treated.



He lost a great deal of blood from his injuries and is still too ill to speak to officers. Initial efforts will be focused on keeping him alive so he can be questioned in full.



'He had lost a lot of blood. He was so weak that we were able to just go in and scoop him up,' state police spokesman David Procopio told the Boston Herald adding that the suspect was in 'serious if not critical condition'.

The bloody endgame came four days after the bombing and just a day after the FBI released surveillance-camera images of two young men suspected of planting the pressure-cooker explosives that ripped through the crowd at the marathon finish line, killing three people and wounding more than 180.

Dzhokhar's older brother, Tamerlan Tsarnaev, 26, lay dead in a furious 24-hour drama that transfixed the nation and paralyzed the Boston area with fear.

Boston police commissioner Ed Davis was celebratory in his tone as he took to Twitter to say, 'It’s a proud day to be a Boston police officer. Thank you all.'

'CAPTURED!!! The hunt is over. The search is done. The terror is over. And justice has won,' the Boston Police Department said on its Twitter account.

Police cornered the younger Tsarnaev around 7pm, less than an hour after police lifted a stay-indoors order for the city and its suburbs.

Resident David Hanneberry reportedly went outside to smoke and saw the tarpaulin cover of his boat was disturbed.



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Assisted: This striking picture shows Dzhokhar Tsarnaev lying on the ground of the property of 67 Franklin Street in Watertown after authorities apprehended him. He had to have medical assistance to breathe

Seriously Injured: This still frame from video shows Boston Marathon bombing suspect Dzhokhar Tsarnaev visible through an ambulance after he was captured in Watertown, on Friday, April 19, 2013

'We Got Him': This is the exact moment that Boston police commissioner Ed Davis told Boston Mayor Thomas Menino that Dzhokhar Tsarnaev had been apprehended - as the suspect is seen (right) wearing an oxygen mask as he is transported to hospital for treatment Security: Law enforcement officials stand guard outside the West Clinical Center, pictured, where Boston bombing suspect Dzhokhar Tsarnaev is being treated Heroes: A member of the North Metro SWAT team raises his fist while leaving the scene near Franklin Street on April 19, 2013 in Watertown, Massachusetts

Tense: Police officers listen to a vehicle's radio for word just before the capture of Dzhokhar Tsarnaev four days after the dual bombings at the Boston Marathon in Watertown, Massachusetts, USA

Drama: Boston bombing suspect Dzhokhar Tsarnaev is believed to have been taken in this ambulance and taken to Mt. Auburn hospital in the city to be treated for his wounds

Expectant: Reporters gather to the rear of the ambulance believed to be carrying Boston bombing suspect Dzhokhar Tsarnaev to Mt. Auburn hospital to be treated for his wounds Relief: Boston Mayor Thomas Menino (left) congratulates Massachusetts Governor Deval Patrick upon the capture of marathon bombing suspect Dzhokhar Tsarnaev

This map shows the location of incidents surrounding the manhunt for the two Boston Marathon bombings suspects and includes an updated timeline of events and information on the Tsarnaev brothers

Emergency call: A homeowner phoned 911 which sent police racing to the scene in a Boston suburb An officer carries a child away from an area where a suspect is hiding on Franklin St., on April 19, 2013 in Watertown, Massachusetts Lock down: An individual appears to have been cornered in a boat in a backyard in a Boston suburbs, reports said

Hiding place: Police carefully moved in on the alleged suspect who has already thrown explosive devices at officers on Thursday Cornered: Police converge near the scene where it was believed 19-year-old bombing suspect Dzhokhar Tsarnaev is in hiding

Terrorists: Tamerlan Tsarnaev (right) was killed during an exchange of gunfire with police on Wednesday night. His younger brother Dzhokhar (left) is still on the run and reportedly has explosives strapped to his body

Volatile: Police conduct a door-to-door search for 19-year-old Boston Marathon bombing suspect Dzhokhar Tsarnaev after it emerged that IEDs had been found at two addresses in Watertown and Cambridge



It emerged earlier in the day that Dzhokhar had several active online profiles and even posted messages warning people to 'stay safe' after the bombings - an apparent attempt to cover his tracks.

The 19-year-old, who attended Cambridge Rindge and Latin School and was a registered student at University of Massachusetts - Dartmouth, was also a 9/11 denier and posted a chilling message on Twitter eight months ago where he wrote: ‘Boston marathon isn’t a good place to smoke'. The tweet last August appeared on the micro-blogging site from user @J_Tsar - named in multiple reports as an alias for the man behind Monday’s atrocity. He also tweeted about his intent to grow a beard and how he ‘wanted out’ of American life. The messages suggested the level of forethought and planning that the Chechen immigrants allegedly put into the devastating attack on Boston. The tweets added to a picture of Dzhokhar which was emerging on Friday, as a young man who had hidden his sinister intentions beneath the facade of a party-loving but dedicated student who was captain of his high school wrestling team. Dzhokhar Tsarnaev, emerged as the FBI's 'Suspect 2' on Thursday after he was seen on CCTV wearing a white baseball cap and dropping a backpack shortly before the huge blasts.

The older brother Tamerlan attended Bunker Hill Community College and was studying to become an engineer but took a year off to pursue boxing.

He traveled to Russia for six months last year. He said in an interview with a Boston University student magazine in 2010: 'I don't have a single American friend. I don't understand them.' Tamerlan was once arrested for domestic assault on a girlfriend, ABC reported.

The 26-year-old had a profile on YouTube channel since August 2012. Five months ago, Tamerlan created a playlist dedicated to terrorism. Named simply ‘Terrorists,’ the playlist included a pair of videos, which are now no longer available. Although most of the clips in the channel are ordinary music videos, Tamerlan Tsarnaev’s YouTube channel shows signs that he had been drawn to radical Islamism. Among the songs on his playlists was one called ‘I will dedicate my life to Jihad.' He also featured videos recorded by recent converts to Islam. A friend of the brothers told CNN that he had known them since 2006 and they were 'normal kids' who partied and occasionally smoked. A classmate told CBS that Dzhokhar did not have an accent and that he assumed he had always lived in the U.S.

Foreboding: The message posted on Twitter to 'Abdul' by J_Tsar last August 10 mentioned the Boston Marathon - eight months before the atrocious attack On the move: Several different agencies including the Boston police, FBI and SWAT teams were working together

Student: Dzhokhar Tsarnaev (left) graduated from his Cambridge high school and was in college studying medicine. He is on the run after his brother Tamerlan (right) was killed after they were named terror suspects

High alert: State police arrest an unidentified man walking at the University of Massachusetts - Dartmouth campus during their sweep of the university on Friday

Distress: Police take away a woman near the home of 'suspect 2' Dzhokhar Tsarnaev on Norfolk Street



Stay indoors: A resident views police in tactical gear conduct a search for a suspect in the Boston Marathon bombings



Escape: A neighbor is escorted to safety as police surround a home while searching for a suspect in the Boston Marathon bombings



Is this their man? This photograph was tweeted by a resident near the shoot-out who claims it is one of the suspects fleeing on foot next to a scorch mark on the pavement

Link: It's not clear whether the incident which unfolded tonight is related to the Boston bombing on Monday False alarm: A man lies spread out on the ground as police trains their weapons on him, however it is thought he is not of the suspects

Clearer shot: David Green, 49, captured this picture with his iPhone likely of the man identified by the FBI as Suspect Number Two, as Green faced east on the corner of Fairfield and Boylston Streets, shortly after the Boston Marathon blasts Comparison: Suspect Number Two is seen in surveillance footage from the FBI released on Thursday (left). The man closely resembling that suspect is seen (right) in a clearer image released by a man who had competed in the Boston Marathon and captured the picture as he ran toward the site of the blast



This combination of Associated Press file images released by the FBI on Thursday show two images taken from surveillance video of what the FBI are calling suspect number 1, (left), in black cap,and suspect number 2, (right), in a white cap

Boston has been on edge after two bombs ripped through the crowd near the finish line of the Boston Marathon.

And an image taken by Florida businessman David Green emerged just hours after the FBI lodged an appeal to identify two suspects behind the attacks that killed three and injured over 180.

His picture shows runners and spectators fleeing in panic around the suspect, closely resembling the man identified by officials as Suspect Number Two, who is wearing a white basketball cap and a dark hooded sweatshirt.

Mr Green has spoken to the FBI and told the New York Times and CNN's Piers Morgan that agents believe the man is Suspect Number Two.



Earlier on Thursday, the FBI launched a hunt for two 'armed and extremely dangerous' men now known to be the Tsarnaev brothers in Monday's deadly Boston bombings - as it was revealed they stayed to watch the carnage unleashed by the twin blasts.

The earlier images, released by the FBI, show the as-yet unidentified men walking in single file toward the finishing line of the race eastward along Boylston Street at 2:37pm, approximately 13 minutes before the twin detonations which came 12 seconds apart.



Hours after the initial photos were made public, investigators released closeup shots on Friday morning of the two suspects that more clearly show the men's faces.

Mr Green captured the astonishingly clear photo with his iPhone at 2:50pm on Monday, as he ran toward the site of the first blast.

The married 49-year-old, who is the CEO of an athletic apparel company, had competed in the marathon and finished the race at around 1:40pm.



It was the first time he had competed in the race.

He was in search of friends who were cheering for him in the crowd when the blasts occurred, he told CNN's Piers Morgan on Thursday night.



As he ran toward the scene of the blast, he captured just one picture with remarkable clarity.



After the explosions, Mr Green posted the photo to his Facebook page and also contacted the FBI on Monday, alerting them to the scene he had captured on his smartphone.



On Thursday, after officials released the photos of the main suspects in the Boston bombings, one of Mr Green's friends contacted him and noted the resemblance to the man in Green's photograph and the picture of Suspect Number Two released by the FBI.

'I have spoken to several agents,' Mr Green, who is from Jacksonville Beach, Fla. told the New York Times.

'They have got the photos, they are picking up material from me, and I don’t think there's any doubt,' he said.



During his interview with CNN, Mr Morgan also probed about the authenticity of the photo.

FBI officials 'told me it looks like a good picture,' he said.



The Florida resident said he was still numb from his experience in New England earlier this week.



'I was incapable of helping anybody. It was well beyond anything I had seen or knew how to deal with,' he said.



'It all happened very fast, there was a lot of screaming and a lot of noise.'

As he sorts through the emotional impact of the experience he said it brings him some relief knowing that a simple photograph could possibly help investigators locate the perpetrators of the horrific attack.



'I hope if it helps solve this case, [it could] in a way redeem what I couldn't do at the site,' he told the CNN host.



In the photo taken by Mr Green, the man who appears to be Suspect Number Two is not wearing a backpack in the aftermath of the blast. He noted that a closeup of the photograph shows how the side of the suspect's hat has a number 3 emblazoned on the side.



This image released by the FBI on Thursday, April 18, 2013, shows in a image from video what the FBI are calling 'Suspect Number One', front left, in black cap, and 'Suspect Number 2, in white cap, (back right)

In the new images released by the FBI - the as yet-unidentified men known as suspect one and suspect two - are first seen walking in single file along Boylston Street after turning at the intersection of Gloucester. Suspect number two wearing a white hat was seen setting down a backpack at the site of the second explosion at the Forum restaurant

Did the suspects stay to watch what they had done:

Both men carried backpacks that were believed to contain the bombs. The man identified as suspect number one wore a dark baseball cap. suspect number two wore a white cap backwards and was seen setting down his backpack on the ground, agent DesLauriers said.



According to FBI sources who have spoken to CNN, still unreleased footage reveals that the suspects stayed at the scene to watch the devastation the two blasts created.



'When the bombs blow up, when most people are running away and victims were lying on the ground, the two suspects walk away pretty casually,' said the official to CNN, who has seen the unreleased video.



'They acted differently than everyone else,' he added.

Was a timer used or were the blasts triggered using a cell phone?

In the hours since the photographs were released, speculation has centered on one of the images which reportedly shows Dzhokhar Tsarnaev , with a cell phone to his ear.



ABC News quoted authorities as saying that they believe a mobile phone device was used to trigger one of the Boston marathon explosions.



A senior law enforcement official said that a 'Massive effort was underway to capture every cell phone call in that local area at the time of the bombings.



And that 'Attempting to trace the call back to the bomber is a time consuming process, but a top top priority.'



However, a law enforcement source told CNN that despite a belief that the bombs were detonated by remote control, the bombs were probably detonated by timers.



However, The FBI has said details of the detonating system are still unknown.



How the Boston bombing victim in iconic photo helped identify attackers

Jeff Bauman, whose legs were blown away in the first explosion, told investigators that he stared right into the eyes of Tamerlan Tsarnaev, the man who tried to kill him.



Bauman lost both his legs below the kneww in the blast and a picture of him in a wheelchair, pale and bloodied was broadcast around the world.



But just before 2.50 p.m. on Monday, Bauman was waiting in the crowd for his girlfriend to cross the finish line when a man wearing a cap, sunglasses and a black jacket over a hooded sweatshirt looked at Jeff, 27, and dropped a bag at his feet.



Two and a half minutes later the bag exploded - destroying Jeff's legs - but Jeff had seen a man who matched suspect one's description.



'He woke up under so much drugs, asked for a paper and pen and wrote, ‘bag, saw the guy, looked right at me,’ Chris Bauman said yesterday in an interview given to Bloomberg.



However, despite his severely medicated state, Jeff managed to give an interview and description to the FBI - which helped them narrow down the man they were looking for.



Yesterday's images were released hours after President Barack Obama and first lady Michelle Obama attended an interfaith service at a Roman Catholic cathedral in Boston to remember the three people killed and more than 180 wounded in the twin blasts Monday at the marathon finish line.

The break in the investigation came just days after the attack that tore off limbs, shattered windows and raised the specter of another terrorist attack on U.S. soil. FBI photo-analysis specialists have been analyzing a mountain of surveillance footage and amateur pictures and video for clues to who carried out the attack and why.

FBI Special Agent in Charge Richard DesLauriers and JTTF officials unveil images depicting two suspects in their investigation in Boston, Massachusetts, in a dramatic press conference on Thursday afternoon



Map showing the Boston crime scene perimeter where experts are trying to piece together the clues left behind the deadly marathon explosion

Horrific Scene: The aftermath of the Boston Marathon bombing on Monday evening in the city

Injured people and debris lie on the sidewalk near the Boston Marathon finish line following an explosion in Boston, Monday, April 15, 2013



