Suspect #1 Dead, Suspect #2 Subject of Massive Manhunt in Watertown, Mass.

Suspects Chechen brothers, MIT officer killed overnight

JOHN BERMAN: I'm John Berman here along with Jake Tapper. If you are just waking up right now we want to bring you up to date on the major developments that have been happening in Boston, and the entire area. A door-to-door search is under way at this moment in Watertown, Massachusetts as police look for the man identified by the FBI as suspect number two in the Boston Marathon bombings. This follows, this follows an intense night. A night of violence that began with the fatal shootings of an MIT campus police officer. Next came a carjacking. Police say the two suspects in the Boston Marathon bombing, these two suspects, were in the car, there was a shoot-out with police in Watertown.

POLICE OFFICER: During the course of that pursuit, several explosive devices were discharged from the car at the police officers. In the exchange of the gunfire we believe that one of the suspects was struck and ultimately taken into custody. A second suspect was able to flee from that car and there is an active search going on at this point in time.

JOHN BERMAN: The man identified by the FBI as suspect number one, suspect number one, was shot and he later died after being taken to the hospital. We've also learned that two suspects in the attacks are brothers. We suspect they are brothers right now. Again, police believe that suspect number two, photographed Monday in a white baseball cap, is now on the loose in or near Watertown, Massachusetts. Public transportation has been shut down in and around Boston. 1.3 million people use public transportation every day. All colleges and schools are closed as police continue this manhunt.