National News

Apr 19, 2013 5:54 PM by NBC News

Boston remains under lockdown as search for bomber continues

(NBC News) More than 17 hours after a bloody rampage that ended with his accomplice brother dead, Boston Marathon bombing suspect Dzhokhar Tsarnaev continued to elude a massive manhunt that has put the city and surrounding suburbs on total lockdown.

Anxiety was rising as SWAT teams and troops hunted door to door for the fugitive - and for more bombs - with more than a million people told to hunker down behind locked doors.

Tsarnaev, 19, remained on the lam hours after he and brother, Tamerlan, 26, made a desperate effort to flee the city following the FBI's release of their photos Thursday evening.

They killed a campus security officer, carjacked a man, and led police on a wild chase that ended in a firefight, officials said. The older brother, who had a bomb strapped to his body, was killed. The younger one escaped, though he may have been wounded, law enforcement sources said.

The suspects' uncle, Ruslan Tsarni, called the brothers "losers" and urged Dzhokhar, a naturalized American citizen of Chechen origin, to turn himself in.

"We're ashamed," he thundered outside his Maryland home.

Three dozen FBI agents surrounded the Cambridge, Mass., home where the brothers grew up after moving to the U.S. a decade ago, seeking asylum. They did not say what was found there.

Across the area, as police cars screamed down streets and helicopters hovered overhead, authorities urged the public to stay inside and keep their doors locked to anyone but law-enforcement officers.

"There is a massive manhunt under way," Massachusetts Gov. Deval Patrick said. "We are asking people to shelter in place."

Subways and buses were shut down, and Amtrak service to Boston was cut. The Red Sox and Boston Bruins' home games were canceled.

Harvard University, Boston University, the Massachusetts Institute of Technology and Emerson University were closed. The University of Massachusetts' Dartmouth campus was evacuated because someone wanted in the case is registered there, the school said on its website.

The lockdown initially affected more than 300,000 people in Cambridge, Watertown, Newton, Brighton, Allston and Belmont. By 8 a.m., the entire city of Boston was paralyzed, although officials later told people who were stuck at work they could drive home.

Watertown, where the second suspect was last seen, was the epicenter of a sprawling search. By 12:30 p.m., police estimated, 60 percent of the homes had been searched. Frightened residents were trapped inside as convoys of heavily armed officers and troops arrived by the hour.

The overnight violence began at MIT about five hours after the FBI released surveillance photos of two "extremely dangerous" men suspected of planting two bombs near the finish line of Monday's Boston Marathon, killing three and wounding 176.

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