While you were sleeping: Developments in manhunt for Boston bombing suspects

Posted at 8:09 AM, Apr 19, 2013
and last updated 2013-04-19 08:25:46-04

(CNN) — Two men suspected in the Boston Marathon bombings that killed three people may have terrorized the area a second time overnight. The latest developments:

— A man who police believe is a suspect in the Boston Marathon bombings was shot and killed by officers in an exchange of gunfire.

— A second suspect is at large in the Boston suburb of Watertown, where dozens of officers from local, state and federal law enforcement agencies have fanned out to track him down.

— Police are going door-to-door to look for him.

— The violence began late Thursday night when a Massachusetts Institute of Technology police officer was shot and killed when he responded to a disturbance on campus.

— Within an hour, police were called to respond to a carjacking, which led them on a chase of the two suspects through Watertown.

— The fleeing men allegedly used explosives against police as they were being chased.

— Police have warned Watertown residents to lock their homes and stay away from windows and doors.WANTED-DEAD