1 Boston Bombing Suspect Dead, 1 Hunted

Suspects led police on violent car chase, firefight.
2:33 | 04/19/13

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Transcript for 1 Boston Bombing Suspect Dead, 1 Hunted
Investigative correspondent Brian Ross on the ground all through the night in Watertown Bryant a night of gunfire a night of bombs. And now a door to door search for that dangerous terrorist. That's -- George and dangerous -- the word the FBI described yesterday as armed and extremely dangerous for those words are certainly true. Residents of this town have been told they may not leave their homes they cannot go and cars all stores have been shut. This town has shut down as a terrorist is somewhere in the vicinity. It began with the robbery of a convenience store in Cambridge around 1030 Thursday night. A surveillance camera inside the store captured the image that -- the man identified only five hours earlier as suspect number two. In the marathon bombings. A short while later on the campus at MIT and Cambridge a shootout that left at MIT police officer dead. That's the two men carjacked a Mercedes excuse. Police have a wild violent chase the street came in neighboring waters. Over at their local film industry there are -- here -- -- Two men firing weapons and tossing explosions coming at pursuing -- The chase ended with a -- for residential neighborhood in Watertown. Where one resident took these pictures showing bullet holes colonel Tim -- of the Massachusetts state police. Several explosive devices were discharge from the car -- the police officers. In the exchange of the gunfire we believe that one of the suspects. Was struck. And ultimately taken into custody suspect number one later died from his -- He was in -- traumatic arrest was CPR ongoing. We spent about 1015 minutes trying to resuscitate this patient at 1:35. In the morning he was pronounced. But suspect number two got away triggering a massive -- and residents of -- to stay inside. Not pick up any strangers as they drove through town. We believe this to be a terrorist we believe this to be a man who's come here to kill people. We need to get him in custody. There are several thousand police officers and national Guardsmen. Who have been assigned to Watertown and a door to door search for this terrorist they don't know where he is and it every single report they get. You -- dozens of cars chasing this way that way. One of our producers we've been told keep your cell phones off if you want to stay alive.

This transcript has been automatically generated and may not be 100% accurate.

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