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Former New York City Mayor Rudy Giuliani weighs in on the latest developments in the manhunt for Dzhokhar Tsarnaev, and where he might be hiding.
CNBC's Kelly Evans reports the London Marathon will take place on Sunday with increased security.
Boston police are conducting door to door searches for the second suspect in the Boston bombings. Rep. Patrick Meehan (R-PA), discusses how well the developments in the manhunt.
Boston remains in lockdown as the manhunt for Dzhokhar Tsarnaev continues. Andrew Arena, Detroit Crime Commission executive director, discusses what kind of cooperation the U.S. could expect from the Russians in the event there is a Chechen-connection in the Boston bombings.
A close look at Boston bombings suspect Dzhokhar Tsarnaev's VK page, with the "Power Lunch" crew. VK is a Russian-language social media site. (2:28)
CNBC's Eamon Javers reports on the amazing technological advances that have occurred since the last major manhunt. A face recognition technology can help identify suspects. Jim Wayman of National Biometric Center, weighs in.
Boston has remained under lockdown now for several hours, with CNBC's "Power Lunch" crew. Former FBI Swat Team senior member Kevin Knierim, offers insight on the training that takes place for the Swat Team members for this type of manhunt.
Discussing the danger Boston bombings suspect Dzhokhar Tsarnaev may pose to the public and law enforcement officials, with Richard Hahn, counterterrorism & forensics explosives expert.
Boston Globe Reporter David Abel spoke with neighbors and the roommate of slain Patrol Officer Sean A. Collier.
Authorities continue to look for Dzhokhar Tsarnaev, who is believed to be one of the bombers in the Boston Marathon, reports CNBC's Scott Cohn.
CNBC's Bill Griffeth reports the latest on the lockdown in the Boston area.
In this media briefing on the Boston Marathon bombings, Massachusetts Governor Deval Patrick, Boston Mayor Thomas Menino and other Boston officials, speak on the latest developments in the search for Dzhokhar Tsarnaev.
WNBC-TV Jonathan Dienst reports the deceased Boston bombings suspect Tamerlan Tsarnaev was out of the country for 6 months in 2012. Clark Ervin, former inspector general of U.S. homeland security; CNBC's Geof Cutmore; and Larry Johnson, Former counterterrorism official, provide perspective.
Mitchell Silber, K2 Intelligence, weighs in on how shocked the U.S. should be that the Boston bombings suspect Dzhokhar Tsarnaev received education in the U.S.
The latest in the manhunt for Dzhokhar Tsarnaev, a suspect in the Boston bombings, with CNBC's Bertha Coombs; Brian Shactman; and Scott Cohn. Harvard University graduate student Melissa Nozell, shares an update on the lockdown in Boston.
"The big picture is where this is taking us on the war on terrorism," said Gil Alba, former New York Police Department detective, discussing the terrorist attacks in Boston.
"He had a lot of friends, he was very popular," said a friend of Dzhokhar Tsarnaev, when asked about his relationship with the terror suspect.
CNBC's Bill Griffeth reports a live update on the search for the Boston bombing suspect, from Watertown, MA.
Former Congressman Barney Frank, (D-MA), discusses how he heard the news about the Boston area lockdown, and its impact on the city.
Ruslan Tsarni, the uncle of the suspects in the Boston Marathon bombing, strongly urges his nephew to surrender to police. (7:30)