WATERTOWN, MASS.A 19-year-old college student wanted in the Boston Marathon bombings was taken into custody Friday evening after a manhunt and intense standoff that left the city virtually paralyzed and his older brother and accomplice dead.
Police announced via Twitter that Dzhokhar Tsarnaev was in custody. They later tweeted, "CAPTURED!!! The hunt is over. The search is done. The terror is over. And justice has won. Suspect in custody."
Tsarnaev's brother, 26-year-old Tamerlan, was killed early Friday in a furious attempt to escape police. Tsarnaev himself was in serious condition when he was apprehended, and has been transported to a local hospital. Several officials expressed relief that Tsarnaev was captured alive.
Col. Timothy Alben with the Massachusetts State Police said at a news conference after the arrest: "We are eternally grateful for the outcome here tonight. We're exhausted folks."
An undated view of the boat in which Dzhokar Tsarnaev was believed to be hiding.
Dzhokhar Tsarnaev had been hiding in a boat in a neighborhood that had been on lockdown near Boston. The crowd gathered near the scene let out a cheer when spectators saw officers clapping.
"Everyone wants him alive," said Kathleen Paolillo, a 27-year-old teacher who lives in the area.
CBS News correspondent John Miller reports a Watertown man who had been observing the lockdown came out for the first time late Friday and saw a tear in the tarp that covers his boat. He climbed up and looked inside. What he said in a later 911 call was "there's a bloody mess in there."
Three Boston police officers responded and they climbed up and looked in there and they said they saw somebody moving. They backed away and called for tactical teams.
They said something popped up out of the tear in the tarp and opened fire and they returned fire. The incident commander then called for a ceasefire so they could set up a perimeter.
The FBI's hostage rescue team arrived and took tactical control of that scene.
Bomb techs cleared a path to the boat to make sure it wasn't a booby trapped or that there was anything waiting for them.
Boston Police Chief Edward Davis said they attempted to talk Tsarnaev out of the boat, but did not succeed.
The FBI hostage rescue teams made an entry to the boat, was able to observe the suspect still moving and pull him out of there. They confirmed he was wounded, there was a lot of blood, but that wound appears to have occurred earlier.
A Department of Justice official told CBS News no Miranda warning was given to Tsarnaev because government is invoking the public safety exception.
During a long night of violence Thursday into Friday, the brothers killed a police officer, severely wounded another officer and hurled explosives at police in a car chase and gun battle, authorities said.
The suspects were identified by law enforcement officials and family members as Dzhokhar and Tamerlan Tsarnaev, ethnic Chechen brothers who had lived in the Dagestan region in southern Russia. They had been in the U.S. for about a decade, an uncle said.
Their uncle in Maryland, Ruslan Tsarni, pleaded on live television Friday: "Dzhokhar, if you are alive, turn yourself in and ask for forgiveness."
Authorities in Boston suspended all mass transit and warned close to 1 million people in the city and some of its suburbs to stay indoors as the hunt went on.
"We believe this man to be a terrorist," said Boston Police Commissioner Ed Davis. "We believe this to be a man who's come here to kill people."
The bombings on Monday killed three people, including a student from China, and wounded more than 180, instantly raising the specter of another terrorist attack on U.S. soil.
Investigators in the Boston case have shed no light on the motive for the bombing.
State Police spokesman Dave Procopio said police realized they were dealing with the bombing suspects based on what the two men told a carjacking victim during their getaway attempt overnight.
Shortly before Dzhokhar Tsarnaev's capture, the White House said President Barack Obama has spoken by phone with Russian President Vladimir Putin about the investigation.
Obama "praised the close cooperation that the United States has received from Russia on counter-terrorism, including in the wake of the Boston attack," the White House said in a statement.
The Boston Red Sox announced that their game against the Kansas City Royals at Fenway Park tonight has been postponed. The Boston Bruins (who were to play the Pittsburgh Penguins this evening) likewise have postponed tonight's game.
Updated timeline / map of pursuit of Boston bombing suspect
Suspects of Chechnyan origin
The suspects were identified by law enforcement officials and family members as ethnic Chechen brothers from Dagestan, which neighbors Chechnya in southern Russia. They lived near Boston, and had been in the U.S. for about a decade after receiving asylum, an uncle said.
The two have been identified as Dzhokhar A. Tsarnaev, 19, of Cambridge, Mass., and his brother, Tamerlan Tsarnaev, 26. They are legal permanent residents of the U.S.
CBS News confirmed that Dzhokhar is an American citizen, having been naturalized on September 11, 2012.
He is reportedly a student at the University of Massachusetts Dartmouth and lived in a dorm there. Correspondent Anthony Mason reports that Tsarnaev was seen on campus yesterday afternoon where he spoke with a friend, who said there was nothing out of the ordinary in their conversation.
Tamerlan -- the suspect seen in FBI photos released Thursday as wearing the black hat -- was wounded in an exchange of gunfire with police during last night's pursuit. He was captured and rushed to Beth Israel Deaconess Medical Center in Boston, where he died at 1:35 a.m. Doctors said he had gunshot wounds and a blast injury. The wounds were throughout the trunk of the man's body, CBS Station WBZ reported.
Ruslan Tsarni, an uncle of the suspects, told CBS Station WBZ "it absolutely devastated me," upon learning that his nephews had been named a suspect in the Marathon bombing. "It's not comprehendable, in our family."
Alvi Tsarni, another uncle of the suspects, told CBS News said he was shocked about learning news of his nephews. "It's not possible. My nephews can't do this stuff, there's no way," he said.
In Toronto, the suspects' aunt, Maret Tsarnev, told the CBC she was in disbelief after seeing the FBI's wanted photos this morning. "This cannot be true," she said. "If somebody wants to convince me, show me evidence. . . . I am suspicious this was staged -- this picture was staged," she said.
Gun battle in Watertown
The MIT shooting on the Cambridge campus Thursday night was followed by gunfire and explosions in Watertown, about 10 miles west of Boston.
John Miller reports that the evening's events began with the robbery of a 7-Eleven convenience store in Cambridge. It was originally reported that the two suspects were involved in the robbery; however, a spokeswoman for the Cambridge 7-Eleven on Massachusetts Avenue told CBS News that the robbery was unrelated.
Nonetheless, when an MIT police cruiser responding to a disturbance call entered the area, the suspects apparently feared they were being targeted.
"They encounter an MIT Police Officer, and rather than see, 'Is he going to follow us? Is he going to chase us?' it appears that they came up and engaged him, killed him in his police vehicle, took off," said Miller.
The MIT officer who had been responding to report of a disturbance Thursday night was ambushed and shot multiple times, according to a statement from the Middlesex district attorney's office and Cambridge police.
The officer, who was later pronounced dead at Massachusetts General Hospital, was identified as 26-year-old Sean Collier.
The Middlesex district attorney's office said Collier was a Somerville resident who had worked at MIT since January 2012. Before that, he was a civilian employee of the Somerville Police Department.
Authorities said after the shooting, the two men rode off in a stolen police vehicle, then carjacked a man in a Mercedes-Benz, keeping him with them in the car for half an hour before releasing him at a gas station in Cambridge. The man, who was not injured, informed police of the carjackers.
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 at about 1 a.m. Friday. Dozens of police officers and FBI agents were in the neighborhood and a helicopter circled overhead.
A transit police officer was seriously injured during the chase, authorities said.
Officer Richard Donohue, Jr., 33, was rushed to Mount Auburn Hospital in Cambridge, where he is in critical condition, reports WBZ.