Continuing our coverage of the bombings at the Boston Marathon, we speak with Devlin Barrett, who covers the FBI for The Wall Street Journal.
The chief FBI agent in Boston has vowed "we will go to the ends of the Earth" to find whoever carried out the deadly attack.
FBI agents searched a home in the suburb of Revere overnight.
Authorities gave no details, but investigators were seen leaving a building there early Tuesday carrying brown paper bags, plastic trash bags and a duffel bag.
The Associated Press contributed reporting to this article.
- Devlin Barrett, covers the FBI for The Wall Street Journal. He tweets @DevlinBarrett.
This segment aired on April 16, 2013.