Boston blasts: Police say suspect on the run is a terrorist

Watertown: Police in Watertown, Massachusetts, are looking for a suspect in the Boston Marathon bombing, officials said on Friday. "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. The another suspect, as confirmed by the police, has been killed.

Police warned people in Boston suburb not to open doors and said they would conduct a door-to-door, street-by-street search.