BOSTON: One of the Boston marathon bombing suspects was killed during a wild, deadly manhunt while the police is still searching for the second one in Watertown, Massachusetts early Friday, local media reported.
"We believe this to be a terrorist. We believe this to be a man who has come here to kill people. We need to get him in custody," said Boston Police Commissioner Edward Davis.
The suspect police are looking for in Watertown is the one seen in images released by the FBI of a man wearing a white cap, Davis said.
One police officer was shot dead and a second wounded in the dramatic nighttime operation, authorities said.
One suspect was caught in Watertown near Boston after a chase in which explosives and gunfire were heard, the Boston Globe reported.
Special police forces sealed off much of the town as they hunted the second man, the newspaper and other media said.
The authorities made no comment on whether there was a link between the manhunt and Monday's bombing in which three people were killed and about 180 injured.
But the operation came only hours after the Federal Bureau of Investigation released photos of the suspects they believe planted the bombs.
A robbery at a gas station was followed by the killing of a police officer on the campus of Massachusetts Institute of Technology and a car chase to Watertown, media reports said.
A second police officer was wounded in a gunfight in the town, they added.
Suspects brothers of Chechen origin
The two suspects in the deadly Boston marathon bombings, one of whom was killed in a shootout with police overnight, are brothers of Chechen origin, NBC News reported Friday.
The suspect still at large has been identified as 19-year-old Dzhokhar Tsarnaev, the US network said, adding the two men were legal permanent residents of the United States.