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One Boston Bombing Suspect Is Dead One Boston Bombing Suspect Is Dead
(35 minutes later)
BOSTON — The Boston region was in the grip of a security emergency as police pursued one of the suspects believed to be responsible for the Monday bombings at the Boston Marathon. Both suspects led officers on a wild and deadly chase through suburban neighborhoods early Friday morning that ended in the death of one of them as well as a campus police officer; the other suspect, who is armed and considered extremely dangerous, remains at large while hundreds of police officers conduct a manhunt through the normally tranquil Boston suburbs. BOSTON — The two suspects in the Boston Marathon bombings led police on a wild and deadly chase through the suburbs here early Friday morning that ended in the death of one of the suspects as well as a campus police officer; the other suspect remained at large while hundreds of police officers conduct a manhunt through Watertown, about five miles west of downtown Boston.
Gov. Deval Patrick has suspended service on all public transit services in the MBTA system in Boston, including the “T” subway, buses and commuter trains. The surviving suspect was identified as Dzhokhar A. Tsarnaev, 19, of Cambridge, Mass., a law enforcement official said. The suspect who was killed was identified as his brother Tamerlan Tsarnaev, 26, the law enforcement official said. Investigators believe that both of the suspects were Chechens, a law enforcement official said.
The authorities asked all residents of the towns of Watertown, Newton, Waltham and Cambridge to stay home and stay indoors. Watertown was locked down early Friday morning, with no one allowed to leave their homes and no businesses allowed to open. The Boston region was in the grip of a security emergency as hundreds of police officers conducted a manhunt through the normally tranquil Boston suburbs.
Gov. Deval Patrick has suspended service on all public transit services in the MBTA system in Boston, including the “T” subway, buses and commuter trains. The authorities asked all residents of the towns of Watertown, Newton, Waltham and Cambridge to stay home and stay indoors. Watertown was locked down early Friday morning, with no one allowed to leave their homes and no businesses allowed to open.
Several area colleges announced the cancellation of classes on Friday, including M.I.T., Harvard, Boston University, Boston College, Emerson College, Northeastern University and Suffolk University.
“This situation is grave, we are here to protect public safety,” said Col. Tim Alben of the Massachusetts State Police.“This situation is grave, we are here to protect public safety,” said Col. Tim Alben of the Massachusetts State Police.
“We believe these are the same individuals that were responsible for the bombing on Monday at the Boston Marathon,” Mr. Alben said. “We believe that they’re responsible for the death of an MIT police officer and the shooting of an MBTA officer.”“We believe these are the same individuals that were responsible for the bombing on Monday at the Boston Marathon,” Mr. Alben said. “We believe that they’re responsible for the death of an MIT police officer and the shooting of an MBTA officer.”
In the course of the chase, the suspects shot and killed a campus police officer at the Massachusetts Institute of Technology and severely wounded a transit police officer, police said. In the course of the chase, the suspects shot and killed a campus police officer at the Massachusetts Institute of Technology and severely wounded a transit police officer, police said. The authorities were investigating whether the suspect who was killed had an improvised explosive device strapped to his body, two law enforcement officials said.
M.I.T. and Harvard University, both in Cambridge, canceled Friday classes.
Edward Davis, the Boston Police Commissioner, told reporters early Friday morning that the two men involved in the chase were the suspects identified Thursday by the F.B.I. as responsible for setting the explosives at Monday’s marathon that killed three people and injured more than 170 others.Edward Davis, the Boston Police Commissioner, told reporters early Friday morning that the two men involved in the chase were the suspects identified Thursday by the F.B.I. as responsible for setting the explosives at Monday’s marathon that killed three people and injured more than 170 others.
He also said that one of the suspects, wearing the black hat in the F.B.I. photos, was dead and that the other suspect, in the white hat, was still on the loose.He also said that one of the suspects, wearing the black hat in the F.B.I. photos, was dead and that the other suspect, in the white hat, was still on the loose.
Early Friday, a virtual army of heavily armed law enforcement officers was still going through houses in Watertown one by one in a search for the second suspect. Police had blocked off a 20-block residential area and urged residents emphatically to stay inside their homes and not answer their doors.Early Friday, a virtual army of heavily armed law enforcement officers was still going through houses in Watertown one by one in a search for the second suspect. Police had blocked off a 20-block residential area and urged residents emphatically to stay inside their homes and not answer their doors.
“We are concerned about securing that area and making sure that this individual is taken into custody,” Mr. Davis said. “We believe this to be a terrorist. We believe this to be a man who’s come here to kill people, and we need to get him in custody.”“We are concerned about securing that area and making sure that this individual is taken into custody,” Mr. Davis said. “We believe this to be a terrorist. We believe this to be a man who’s come here to kill people, and we need to get him in custody.”
With gunfire ricocheting around the tranquil neighborhood, residents were later told to go into their basements and stay away from windows.With gunfire ricocheting around the tranquil neighborhood, residents were later told to go into their basements and stay away from windows.
The pursuit began after 10 p.m. Thursday when two men robbed a 7/11 near Central Square in Cambridge. A security camera caught a man identified as one of the suspects, wearing a gray hoodie.The pursuit began after 10 p.m. Thursday when two men robbed a 7/11 near Central Square in Cambridge. A security camera caught a man identified as one of the suspects, wearing a gray hoodie.
About 10:30, police received reports that a campus security officer at M.I.T. was shot while he sat in his police cruiser. He was found with multiple gunshot wounds, according to a statement issued by Middlesex Acting District Attorney Michael Pelgro, Cambridge Police Commissioner Robert Haas, and MIT Police Chief John DiFava. The officer was taken to Massachusetts General Hospital, where he was pronounced dead.About 10:30, police received reports that a campus security officer at M.I.T. was shot while he sat in his police cruiser. He was found with multiple gunshot wounds, according to a statement issued by Middlesex Acting District Attorney Michael Pelgro, Cambridge Police Commissioner Robert Haas, and MIT Police Chief John DiFava. The officer was taken to Massachusetts General Hospital, where he was pronounced dead.
A short time later, police received reports of an armed carjacking of a Mercedes SUV by two males in the area of Third Street in Cambridge, the statement said. “The victim was carjacked at gunpoint by two males and was kept in the car with the suspects for approximately a half hour,” the statement said. He was later released, uninjured, at a gas station on Memorial Drive in Cambridge.A short time later, police received reports of an armed carjacking of a Mercedes SUV by two males in the area of Third Street in Cambridge, the statement said. “The victim was carjacked at gunpoint by two males and was kept in the car with the suspects for approximately a half hour,” the statement said. He was later released, uninjured, at a gas station on Memorial Drive in Cambridge.
Police immediately began to search for the vehicle and pursued it into Watertown. During the chase, “explosive devices were reportedly thrown from car by the suspects,” the statement said,and the suspects and police exchanged gunfire in the area of Dexter and Laurel streets. Police immediately began to search for the vehicle and pursued it into Watertown. During the chase, “explosive devices were reportedly thrown from car by the suspects,” the statement said, and the suspects and police exchanged gunfire in the area of Dexter and Laurel streets.
A Watertown resident, Andrew Kitzenberg, 29, said he looked out his third-floor window to see two young men of slight build in jackets engaged in “constant gunfire” with police officers. A police SUV “drove towards the shooters,” he said, and was shot at until it was severely damaged. It rolled out of control, Mr. Kitzenberg said, and crashed into two cars in his driveway.A Watertown resident, Andrew Kitzenberg, 29, said he looked out his third-floor window to see two young men of slight build in jackets engaged in “constant gunfire” with police officers. A police SUV “drove towards the shooters,” he said, and was shot at until it was severely damaged. It rolled out of control, Mr. Kitzenberg said, and crashed into two cars in his driveway.
The two shooters, he said, had a large, unwieldy bomb that he said looked “like a pressure cooker.”The two shooters, he said, had a large, unwieldy bomb that he said looked “like a pressure cooker.”
“They lit it, still in the middle of the gunfire, and threw it. But it went 20 yards at most.” It exploded, he said, and one of the two men ran toward the gathered police officers. He was tackled, but it was not clear if he was shot, Mr. Kitzenberg said.“They lit it, still in the middle of the gunfire, and threw it. But it went 20 yards at most.” It exploded, he said, and one of the two men ran toward the gathered police officers. He was tackled, but it was not clear if he was shot, Mr. Kitzenberg said.
The explosions, said another resident, Loretta Kehayias, 65, “lit up the whole house. I screamed. I’ve never seen anything like this, never, never, never.”The explosions, said another resident, Loretta Kehayias, 65, “lit up the whole house. I screamed. I’ve never seen anything like this, never, never, never.”
Meanwhile, the other young man, said Mr. Kitzenberg, got back into the SUV, turned it toward officers and “put the pedal to the metal.” The car “went right through the cops, broke right through and continued west.”Meanwhile, the other young man, said Mr. Kitzenberg, got back into the SUV, turned it toward officers and “put the pedal to the metal.” The car “went right through the cops, broke right through and continued west.”
The two men left “a few backpacks right by the car, and there is a bomb robot out there now.” Police had told residents to stay away from their windows, he said.The two men left “a few backpacks right by the car, and there is a bomb robot out there now.” Police had told residents to stay away from their windows, he said.
During this exchange, an MBTA police officer was seriously injured and taken to the hospital.During this exchange, an MBTA police officer was seriously injured and taken to the hospital.
At the same time, one of the suspects was critically injured with multiple gunshot wounds and taken to Beth Israel Deaconess Hospital in Boston, where he was pronounced dead at 1:35 a.m.At the same time, one of the suspects was critically injured with multiple gunshot wounds and taken to Beth Israel Deaconess Hospital in Boston, where he was pronounced dead at 1:35 a.m.
A doctor who works at Beth Israel, and who lived in the area of the chase and shoot-out, said he was working at home around 1 a.m. when he heard the wailing sirens. He said at a news conference at Beth Israel that he recognized that something was wrong and alerted his emergency room to prepare for something.A doctor who works at Beth Israel, and who lived in the area of the chase and shoot-out, said he was working at home around 1 a.m. when he heard the wailing sirens. He said at a news conference at Beth Israel that he recognized that something was wrong and alerted his emergency room to prepare for something.

Jess Bidgood, Joan Nassivera, Anastasia Economides, and Jeremy Zilar contributed reporting.

Serge F. Kovaleski and John Eligon contributed reporting from Boston, and Ravi Somaiya and William K. Rashbaum from New York.

This article has been revised to reflect the following correction:This article has been revised to reflect the following correction:
Correction: April 19, 2013Correction: April 19, 2013

An earlier version misspelled the name of a resident who described the police activity in Watertown, Mass. He is Andrew Kitzenberg, not Kitzenburg.

An earlier version misspelled the name of a resident who described the police activity in Watertown, Mass. He is Andrew Kitzenberg, not Kitzenburg.