Police say one of two suspects in the shooting of an MIT police officer is dead and a massive manhun

(19 Apr 2013) HEADLINE: Police: MIT suspect tied to Boston marathon bomb CAPTION: Police say one of two suspects in the shooting of an MIT police officer is dead and a massive manhunt is underway for another, who is tied to the Boston Marathon bombing. (April 19) DURATION: VOICE-OVER SCRIPT: POLICE CONVERGED ON A NEIGHBORHOOD JUST WEST OF BOSTON HOURS AFTER A POLICE OFFICER WAS SHOT AND KILLED ON THE CAMPUS OF MASSACHUSETTS INSTITUTE OF TECHNOLOGY. A STATE POLICE SPOKESMAN SAID THE INCIDENT IN WATERTOWN INVOLVED WHAT WAS THOUGHT TO BE EXPLOSIVE DEVICES --- LIKELY USED AGAINST POLICE OFFICERS. NO ARRESTS HAD BEEN MADE IN THE OFFICERS FATAL SHOOTING -- AND A MANHUNT WAS ON FOR THE SHOOTER. HOURS EARLIER -- THE FBI RELEASED PHOTOS AND VIDEO OF TWO SUSPECTS IN MONDAY'S BOMBINGS AT THE FINISH LINE OF THE BOSTON MARATHON. THEY DEPICT A YOUNG MAN IN A DARK CAP AND ANOTHER IN A WHITE CAP WORN BACKWARD, BOTH WEARING BACKPACKS AND ONE WALKING BEHIND THE OTHER ON THE SIDEWALK NEAR THE FINISH LINE AS MARATHONERS RUN BY. THE FBI AGENT IN CHARGE DESCRIBED THEM AS ARMED AND EXTREMELY DANGEROUS AND URGED ANYONE WHO SEES THEM TO CONTACT AUTHORITIES. SIGOUT - Name/Associated Press STORYLINE Find out more about AP Archive: http://www.aparchive.com/HowWeWork Twitter:   / ap_archive   Facebook:   / aparchives   ​​ Instagram:   / apnews   You can license this story through AP Archive: http://www.aparchive.com/metadata/you...