Caught just in time: 'Bombers were about to plant MORE devices but plot was spoiled by release of CCTV photos'



The Boston bombers were reportedly planning more attacks across the city

However, the released of the photographs of the suspects 'forced them out of their hideout'



Footage released on Saturday shows Dzhokhar Tsranaev laying flat under a tarp in a boat. Police used a robot to pull the tarp off the boat

Police tracked him with thermal imaging cameras and engaged him in a furious exchange of gun-fire that began shortly after 7pm

Stand-off continued until 8:45pm when Tsarnaev surrendered



Dzhokhar has been hospitalized at the Beth Israel Deaconess Medical Center. He is 'intubated and sedated' and cannot yet speak

Tamerlan Tsarnaev had injuries from head to toe and all limbs intact when he arrived at the hospital. He died early on Friday




The Boston bombers were planning more attacks across the city and were already building the bombs to do this says the city's police commissioner Ed Davis.

Davis says it's his belief that 19-year-old Dzhokhar Tsarnaev and his 26-year-old brother Tamerlan 'were going to attack other individuals' — and Davis says that's based on the evidence at the scene and the cache of weapons the brothers had at their disposal.

However, Davis claims releasing photos of the two Boston Marathon bombing suspects 'forced them out of their hideout' and spurred them into Thursday and Friday's deadly night time car chaos and gun battle with law enforcement.

'It forced them out of their hideout and they decided to commit further violent acts. But it’s my belief that they were already manufacturing explosive devices. Further violent acts were inevitable,' Davis told The Boston Globe.

The suspects 'were not making those explosives for nothing,' Davis told The Globe. 'There was a plan there, and I believe that tragically Sean Collier lost his life, but he was truly protecting the citizens of the city'

Handguns, a rifle and at least six bombs, three of which detonated were found at the scene on Friday after officers had their first showdown with the Boston bombing brothers in Watertown, Massachusetts.

And it is believed that federal prosecutors are putting the final touches together on charges against Dzhokhar Tsarnaev, despite his throat wound leaving him unable to speak.



The most serious charge available to federal prosecutors would be the use of a weapon of mass destruction to kill people, which carries a possible death sentence. Massachusetts does not have the death penalty.



CBS News ' John Miller has claimed investigators believe the wound to the back of his neck is evidence that Dzhokhar attempted to end his own life at the culmination of Friday's dramatic standoff.



'They say it appears from the wound that he might have stuck a gun in his mouth, and fired and actually just went out the back of his neck without killing him.'



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Dzhokhar Tsarnaev and his 26-year-old brother Tamerlan 'were going to attack other individuals' —says Boston police commissioner Davis and says that opinion is based on the evidence at the scene and the cache of weapons the brothers had at their disposal.



Planning further atrocities?: Dzhokhar Tsarnaev and his 26-year-old brother Tamerlan were believed to be about to unleash further terror attacks on Boston according to the city's police commissioner Dzhokhar Tsarnaev, is seen in this undated still image taken from surveillance video on Friday (left) as he is seen climbing into that same day morning after a police gun battle. He was later found in the boat and captured Handguns, a rifle and at least six bombs, three of which detonated were discovered at the scene on early friday after officers first came face-to-face with the Tsarnaev brothers on a residential street in Watertown, Massachusetts.

Police chief Edward Deveau revealed that a lone officer was the first to encounter Tamerlan and Dzhokar Tsarnaev and that before he could call for back-up, the two brothers exited the Honda and BMW's they were driving and began firing.

'They jump out of the car and unload on our police officer,' said Deveau.

'They both came out shooting -- shooting guns, handguns. He's under direct fire, very close by. He has to jam it in reverse and try to get himself a little distance.'

Eventually, five other officers, including two off-duty cops arrived and there began a close quartered gun-fight in a 'very tight area' in the middle of suburban Watertown.

'We estimate there was over 200 shots fired in a five- to 10-minute period,' said Deveau.

He also revealed that the two brothers detonated a pressure cooker bomb - lending credence to the theory that the brothers were planning further terrorist strikes across the city.

'We find the pressure cooker embedded in the car down the street, so there's a major explosion during this gunfight (with) my officers -- six of my officers that I'm extremely proud of,' Deveau said.

The pair also threw two other 'rough' and crude explosives at the officers, by lighting them.

And then at the culmination of the gun fight, Tamerlan Tsarnaev begins to advance on the pinned down officers. Still: The suspect appears to be laying flat in the boat in the final moments before his capture He all of a sudden comes out from under cover and just starts walking down the street, shooting at our police officers, trying to get closer," Deveau said. "Now, my closest officer is five to 10 feet away, and they're exchanging gunfire between them. And he runs out of ammunition -- the bad guy -- and so one of my police officers comes off the side and tackles him in the street.

'We're trying to get him handcuffed. There's two or three police officers handcuffing him in the street -- the older brother. At the same time, at the last minute -- they obviously have tunnel vision, it's a very, very stressful situation -- one of them yells out, 'Look out!' and here comes the black SUV, the carjacked car, directly at them,' said Deveau.

'They dive out of the way, and he (the younger brother) drives over his brother and drags him a short distance down the street.'

Tamerlan was pronounced dead later on at hospital and Dzhokar drove off in the Mercedes SUV about two blocks and then exited the car and ran off into Watertown.

This comes as previously unseen video of the dramatic capture of the Boston bomber shows a police robot ripping apart the tarp concealing the suspect and numerous flash bang grenades being thrown into the boat where he lay.

In the final moments before his capture on Friday night, Dzhokhar Tsranaev appeared to lay still inside a boat in a backyard in Watertown, Mass. on Friday before he was taken into custody. Doctors also revealed grizzly details on how his brother, Tamerlan, had wounds from head to toe, 'e very region of his body had injuries [though] his legs and arms were intact,' they said about his condition when he was hospitalized on Friday morning shortly before he died. Watertown police chief Edward Deveau has also given the most detailed yet account of events on Friday. Boston had been on edge after two bombs ripped through the crowd near the finish line of the Boston Marathon on Monday. The city was gripped with fear as the suspects were being hunted down, after the FBI released photos of the men behind the attacks on Thursday night.

Violence broke out in the early morning hours Friday when police received reports of a robbery of a convenience store in Kendall Square near MIT and a Sean Collier, an MIT police officer, was shot multiple times.

In hiding: The dramatic footage released by police shows where the teenager lay hiding in a boat in the quiet suburban neighbourhood of Watertown

Blast: Video appears to show a flash grenade being thrown into the boat where the suspect hid

Show of force: The Massachusetts State Police has released this video showing an explosion resulting from a grenade thrown into the boat where the suspect lay

Caught: Dzhokhar Tsarnaev lies on the ground of the property of 67 Franklin Street in Watertown after authorities apprehended him. He had to have medical assistance to breathe

Speaking to CNN following Dzhokhar's capture, Deveau said that a single officer was the first to encounter the two cars that Tamerlan and Dzhokhar Tsarnaev were driving, just before 1am Friday.



One of the vehicles was a Mercedes SUV the brothers had carjacked earlier that night.



Before the officer could call for backup, the two cars came to a stop and the brothers got out.

'They jump out of the car and unload on our police officer,' Deveau said.

'They both came out shooting -- shooting guns, handguns. He's under direct fire, very close by. He has to jam it in reverse and try to get himself a little distance.'

Five others officers arrived on the scene in the middle of an intense shootout during which Deveau says over 200 rounds were fired in 5-10 minutes.



The chief said that one of the suspected bombers lobbed an explosive at the officers, which later turned out to be a pressure cooker bomb like the ones used in the marathon attack Monday.



The brothers also allegedly threw other explosives at police, which Deveau described as 'very rough devices.'



Two of the bombs detonated and two did not.



The pressure-cooker bomb exploded, and the lid was found embedded in a nearby car, Deveau said.



At one point, the older brother came directly toward police, firing a gun at officers as he inched closer toward him, but Tamerlan Tsarnaev's luck ran out along with his ammunition, allowing one of the officers to tackle him.

The older of the two Chechen brothers suspected of bombing the Boston Marathon was wounded but alive following a police gun battle when his younger brother ran him over with a car, possibly causing his death.

In hiding: Dzhokhar was discovered by Massachusetts resident David Henneberry hiding in his boat. Police used thermal imaging to monitor his movements

Revealed: How heat sensors found the Boston terror suspect - the cameras showed how the man moved around the boat

'He all of a sudden comes out from under cover and just starts walking down the street, shooting at our police officers, trying to get closer,' Police Chief Edward Deveau, of Watertown, Massachusetts, said.

'Now, my closest officer is five to 10 feet away, and they're exchanging gunfire between them. And he runs out of ammunition -- the bad guy -- and so one of my police officers comes off the side and tackles him in the street.'

He was in the process of being handcuffed by two or three officers when his younger brother, 19-year-old Dzhokhar, jumped behind the wheel of a black SUV the two hand allegedly carjacked earlier and barreled toward the group.

The older of the two Chechen brothers suspected of bombing the Boston Marathon was wounded but alive following a police gun battle when his younger brother ran him over with a car, possibly causing his death.

Officers who were restraining Tamerlan Tsarnaev got out of the way of the speeding vehicle, which ended up driving over the wounded suspect, the police chief told CNN .

According to Deveau, the 19-year-old suspect dragged his sibling’s body a short distance down the street and drove off.



He later ditched the SUV and escaped on foot.

'I am extremely lucky that I’m not at a funeral this morning for one of my officers,' Deveau said in an interview on MSNBC.



'They were heroic, very talented, and had the guts and glory to defend our town, our community, in a very tight situation.'

Suspects: Tamerlan Tsarnaev, 26, left, was reportedly run over by his accomplice and younger brother Dzhokhar Tsarnaev, 19

Tamerlan Tsarnaev was pronounced dead at a hospital a short time later.

An alleged autopsy photograph of Tamerlan that was leaked Friday shows multiple gunshot wounds and a massive open gash that spans from the center of his chest to his back.

Another smaller gash is located right below the larger wound. His right shoulder and his face show signs of hemorrhaging.



A doctor involved in treating the Boston Marathon bombing suspect who died in a gunbattle with police told the Associated Press that Tamerlan Tsarnaev had injuries from head to toe and all limbs intact when he arrived at the hospital.

Dr David Schoenfeld said 26-year-old Tamerlan Tsarnaev was unconscious and had so many penetrating wounds when he arrived at Beth Israel Deaconess Medical Center early Friday that it isn't clear which ones killed him, and a medical examiner will have to determine the cause of death.

The older Tsarnaev's clothes had been cut off by emergency responders at the scene, so if he had been wearing a vest with explosives, he wasn't by the time he arrived at the hospital, the doctor said.



'From head to toe, every region of his body had injuries,' he said.



'His legs and arms were intact - he wasn't blown into a million pieces' - but he lost a pulse and was in cardiac arrest, meaning his heart and circulation had stopped, so CPR, or cardio-pulmonary resuscitation, was started.

Site: Investigators work around the boat where Dzhokhar Tsarnaev was found hiding after a massive manhunt that left the Boston area paralyzed in fear

Schoenfeld did not address the police assertion that Tsarnaev was run over by a car driven by his brother as he fled the gunfire.



The doctor said he couldn't discuss specific treatments in the case except to say what is usually done in such circumstances, including putting a needle in the chest to relieve pressure that can damage blood vessels, and cutting open the chest and using rib-spreaders to let doctors drain blood in the sac around the heart that can put pressure on the heart and keep it from beating.



'Once you've done all of those things ... if they don't respond there's really nothing you can do. You've exhausted the playbook,' he said.

After 15 minutes of unsuccessful treatment, doctors pronounced him dead at 1:35am.



His body was turned over to law enforcement for examination to determine the source of his injuries.

'We did everything we could' to try to save his life, Schoenfeld said.



'There was some discussion in the emergency room about who it was. That discussion ended pretty quickly,' Schoenfeld said.



'It really doesn't matter who the person is. We're going to treat them as best we can.'

Evidence: Investigators gather evidence on Saturday, near the location in Watertown, Mass., where Dzhokhar Tsarnaev, 19, was captured

Review: Investigators remained at the home in Watertown, Mass. where the surviving suspect was located

After the early morning violence, officials frantically searched for the suspect who remained on the loose.

The city issued a 'shelter-in-place' request, telling residents of the greater Boston area while the streets were overun with an estimated 1,000 law enforcement officers who scoured the are for the fugitive.



Shortly before 6pm, officials announced that though they hadn't located the alleged bomber, Dzhokhar Tsarnaev, they were lifting the lockdown and urged residents to exercise extreme caution and be vigilant.



One Watertown, Mass. resident took that advice to heart.



After 6pm, David Henneberry walked out to his backyard and noticed something odd about his boat, that is stored behind his home.



'He looked and noticed something was off about his boat, so he got his ladder, and he put his ladder up on the side of the boat and climbed up, and then he saw blood on it, and he thought he saw what was a body laying in the boat,' Henneberry's neighbor, George Pizzuto told ABC News .



'So he got out of the boat fast and called police.'



Authorities then used a helicopter equipped with a thermal imaging device to confirm that there was a body in the tarp covered boat and that the person was alive.



Hovering over the area, the helicopter spotted the heat signature of a person, confirming Henneberry's suspicions.

'Our helicopter had actually detected the subject in the boat,' Col. Timothy Alben of the Massachusetts State Police told NBC News. 'We have what's called a FLIR — a forward-looking infrared device — on that helicopter.

The chopper monitored the body in the boat for more than an hour before police moved in.

ATF, SWAT and K-9 units had descended upon 67 Franklin Street and engaged Tsarnaev in a vicious gun battle - over 40 shots rang out in the quiet suburban neighborhood.



'There was an exchange of gunfire,' confirmed Boston Police Commissioner Ed Davis at a news conference.



'We used a robot to pull the tarp off the boat,' David Procopio of the Massachusetts State Police said to CNN.



Unconfirmed reports suggest that Tsarnaev was shot twice by law enforcement in the gun battle which raged until his capture at approximately 8:45pm.



Law enforcement sources have suggested that Tsarnaev gave himself up voluntarily after realizing continuing resistance was fruitless.

Search: A light beam from a helicopter, top right, aims in the direction of Watertown, where officials searched for a suspect on Friday

Endgame: An ambulance carries Boston Marathon Dzhokhar Tsarnaev from the scene after he was apprehended in Watertown, Massachusetts, USA on Friday

He was found bleeding heavily from gunshot wounds to his neck and foot from the shoot-out on Friday morning, which he escaped on foot before taking up his hiding place in a Watertown backyard boat.



The blood loss would have taken place over more than 20 hours by the time he was found and there were reports, which could not be confirmed, that he may have been shot a further two times last night.



'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'.

He was rushed from the scene by ambulance and images showed apparatus being used to help him breathe.

As the suspect receives treatment at the Beth Israel Deaconess Medical Center in Boston, law enforcement officials have revealed that he injured his throat in the standoff with police and may not be able to speak, a law enforcement official toward CNN.



Massachusetts Governor Deval Patrick said on Friday : '[I] hope he survives, because we have a million questions.'

Tsarnaev was captured last night in the culmination of a dramatic week-long police hunt and a completely unprecedented $333 million shutdown of Boston and its suburbs .

Scene: Aerial views of 67 Franklin Street, where Dzhokhar was taken into custody

Wounded: Dzhokhar Tsarnaev is seen being transported in an ambulance after he was captured on Friday. Officials say he suffered an injury to his throat and cannot speak

The medical facility where he is a patient is under heavy armed guard and federal prosecutors are standing by at the center for when the teenager is able to speak.

Victims who were injured in the deadly blast at the marathon on Monday are also among those being treated at the medical center, which has some families angry about the close proximity to the alleged mastermind.



Tsarnaev is being treated in a room yards from where 11 injured marathon victims are still in recovery while a specially drawn up High-Value Detainee Interrogation Group wait anxiously to question him.



One Boston mother, Liz Norden's two sons, Paul and J.P., were in the crowd at the race on Monday and have both lost a leg in the aftermath of the tragic event.

Her younger son, Paul, is being treated at Beth Israel Deaconess Medical Center.



She told NBC News that she is shocked and angry that the suspect is so near.

'I can't even tell you how devastating it's been,' Liz Norden told NBC News. 'Those two [the bombers] shattered my world.'

Harrowing scene: Bomb disposal robots searched the suspects' vehicle early on Friday, with an eye witness saying a water bottle was removed

Violent moments: The scene of the shootout, in which Tamerlan Tsarnaev was killed, involving the Boston bomber suspects in Watertown, Massachusetts Tense night: Police with guns drawn search for a suspect in the bombing after a shootout and carjacking

Nothing to lose: At one point, police say Tamerlan marched down the street toward police while firing a gun at them

Explosive: Police say the suspects opened fire on officers and lobbed makeshift bombs devices at them

Fire power: About 200 rounds were fired during the shootout in a matter of five-ten minutes

Chaos in the streets: Gunfire erupted in a quiet suburban neighborhood, setting off a massive manhunt

The showdown in Watertown broke out after the violence began in Cambridge, Mass.



Violence erupted in the early morning hours Friday when police received reports of a robbery of a convenience store in Kendall Square near MIT and a police officer was shot and ended up with a gun fight in a small suburban street as residents slept.

Sean Collier, an MIT police officer, was shot multiple times while in his cruiser at Main and Vassar streets, near the Stata Center on the MIT campus.

Officials told the Washington Post that footage from a security camera shows the two suspects approaching the car and speaking to the officer.



All of a sudden, one of the suspects pulled a gun and shot Collier multiple times, including one shot to the head.



Hero: MIT Police Officer Sean Collier was shot and killed in an armed confrontation with the suspects in the Boston Marathon bombing

Some police have suggested that the shooting was meant to spark a full scale confrontation with police.

'They were looking to start something,' one official told the Washington Post.



The 26-year-old Collier was pronounced dead at Massachusetts General Hospital.



A short time later, the two men carjacked a Mercedes SUV at gunpoint.



The hostage was then driven around for half an hour as the pair decided what their next move would be.

As police moved in on the vehicle following reports of a carjacking, the pair decided to dump the driver at a gas station on Memorial Drive in Cambridge.

The search for the vehicle led to a chase that ended in Watertown, where authorities said the suspects threw explosive devices from the car and exchanged gunfire with police.

Richard H. Donahue, 33, a transit police officer was seriously injured during the chase.



In Watertown, witnesses reported hearing multiple gunshots and explosions at about 1am on Friday, when the frightening scene occurred.



On Saturday, Boston police paid tribute to the MIT officer who died in the line of duty.



Mr Collier's body was transported from the Boston medical examiner's office to the deceased man's hometown of Wilmington.

Officers and local residents lined the street to remember the slain officer as his body left the office.



His family had asked that the hearse, with a police escort, pass through the center of hometown before heading to a funeral home in Stoneham.

A vigil was held in his hometown of Wilmington on Saturday night, as residents flocked to the streets in remembrance of the hero, who was shot multiple times by the suspects.



The Collier family said that the 26-year-old had always wanted to be a police officer.



'We are heartbroken by the loss of our wonderful and caring son and brother, Sean Collier. Our only solace is that Sean died bravely doing what he committed his life to - serving others,' his family said in a statement.

Mr Obama similarly offered his condolences to the Collier family on Friday night, after the surviving suspect was captured.



'He died bravely in the line of duty doing what he committed his life to doing, serving and protecting others,' the president said.



Boston Strong: Fans hold an American flag during ceremonies in tribute of victims and first responders to the Boston Marathon bombings before a baseball game between the Boston Red Sox and the Kansas City Royals

The Red Sox paid an emotional tribute to the people of Boston on Saturday afternoon in a moving pregame ceremony at Fenway Park, the first time since last Monday's deadly terrorist attacks that killed three and left more than 180 wounded.



Designated hitter David Ortiz exclaimed 'this is our f***ing city' to rapturous cheers, and some tears, after a moving video, encapsulating the horror and heroism of the past few days, played on the big screen.

Proud Bostonians could be seen watching the game, many of them clutching American flags.



The city used the significant sporting event to honor the victims and offer gratitude to the police, firefighters and medical personnel as well as strangers who risked their lives to save others after the senseless attacks.

'All right, Boston,' said Ortiz. 'This jersey that we wear today, it doesn't say Red Sox. It says Boston.

He continued: 'We want to thank you, Mayor Menino, Governor Patrick, the whole police department for the great job they did this past week. This is our f***ing city, and nobody is going to dictate our freedom. Stay strong.'

The Boston team, rather than wearing their traditional 'Red Sox' embroidered across the chest, wore crisp white uniforms that simply read 'Boston,' with a 'B Strong' logo.



The team said their uniforms would be autographed and auctioned to raise money for the charity established to help the victims, called One Fund Boston.

Remembrance: Lisa Marriott and her son, Joseph, hold a sign and candles during a vigil for slain MIT police officer Sean Collier at the Town Common in Wilmington, Massachusetts on Saturday

During the video, the crowd applauded when images of the brave Carlos Arredondo appeared on the screens and it increased when pictures and quotations from President Obama, Governor Patrick and Mayor Menino were shown.



It was accompanied by Jeff Buckley's rendition of 'Hallelujah.'



When the footage moved to the manhunt for 19-year-old Dzhokar A Tsarnev in Watertown, the fans were on their feet cheering.



At that point, law enforcement and first responders walked onto the field and formed a line in front of the Red Sox dugout.



Moments of silence were then held for Marathon victims, eight-year-old Martin Richard, Krystle Campbell and Lu Lingzi and MIT police officer Sean Collier, who was killed Thursday night in a shootout between the Tsarnaevs.

