• FBI 'Zeroing In on Some People' in Boston Bomb Case  Wednesday, 17 Apr 2013 | 1:17 PM ET

    Scott Cohn and Sue Herera comment on an NBC News report that investigators have some 'solid leads' from videotape in the Boston Marathon bomb explosions. (2:46)

  • Intense Investigations Near Explosion Sites  Wednesday, 17 Apr 2013 | 1:02 PM ET

    CNBC's Scott Cohn reports the latest in Boston where 2 bombs exploded on Monday.

  • Hunt For Boston Bomb Suspects Wide Open: FBI  Wednesday, 17 Apr 2013 | 11:36 AM ET

    New details are emerging about the type of device used in Monday's bombing in Boston, reports CNBC's Scott Cohn.

  • Boston Braces for Economic Impact After Attack Wednesday, 17 Apr 2013 | 9:42 AM ET
    Flowers are placed near the bombing site in Boston.

    Massachusetts Gov. Deval Patrick said the state would be open for business, "but it will not be business as usual."

  • 'Soft Targets' Concern Security Experts  Wednesday, 17 Apr 2013 | 8:32 AM ET

    CNBC's Eamon Javers has the latest details on a ricin-laced letter sent to Sen. Wicker's office. And, Clark Ervin, former Homeland Security Department official; and Clint Van Zandt, former FBI profiler, discuss whether Monday's bombing leaves major events such as sporting, more vulnerable to future attacks.

  • Investment Tips Amid Market Uncertainty  Wednesday, 17 Apr 2013 | 8:05 AM ET

    Steve Bertoni, Forbes associate editor; and Rebecca Patterson, Bessemer Trust, share their investment strategies after gold's big dip; "squishy" earnings and possible downgrades in France and/or Germany.

  • Boston Bombs Believed Packed in Pressure Cookers  Wednesday, 17 Apr 2013 | 8:03 AM ET

    CNBC's Scott Cohn reports the type of devices used in Monday's bombing in Boston are beginning to emerge.

  • Federal Agents Zero In on Bomb's Charred Remains  Wednesday, 17 Apr 2013 | 7:32 AM ET

    Bomb fragments are being reconstructed at an FBI laboratory, reports CNBC's Scott Cohn. And, Philip Mudd, New America Foundation, discusses the psychological impact of terrorism and how to avoid copycat attacks.

  • Boston Bombs Possibly Delivered in Black Duffle Bags  Wednesday, 17 Apr 2013 | 6:04 AM ET

    CNBC's Scott Cohn reports the FBI and state and local law officials are intensifying their probe into Monday's bombing at the Boston Marathon, recovering two pressure cookers packed with nails and other metals.

  • Is a Lone Group Responsible for Boston?  Wednesday, 17 Apr 2013 | 5:30 AM ET

    Alexia Ash, head of North America at IHS, says the anonymity and the method used suggest the Boston Bombings were the act of a lone group.

  • No One in Custody, No Motive Found  Tuesday, 16 Apr 2013 | 7:58 PM ET

    The very latest on the ground in Boston, with WVIT's Debra Bogstie.

  • Boston Bombings: Who is Responsible?  Tuesday, 16 Apr 2013 | 7:33 PM ET

    Discussing whether a domestic or foreign terrorist is responsible for the Boston Marathon bombings, with J. Michael Barrett, Diligent Innovations principal, and Heather Higgins, Independent Women's Forum.

  • FBI Agent: No Claims of Responsibility Received  Tuesday, 16 Apr 2013 | 5:16 PM ET

    CNBC's Bertha Coombs reports on the latest on the Boston bombings.

  • McCaffrey: Bombs 'Not Sophisticated, Foreign-Made'  Tuesday, 16 Apr 2013 | 4:36 PM ET

    Security consultants say the entire calculus of protecting a marathon has changed, reports CNBC's Scott Cohn; and Gen. Barry McCaffrey, ex-National Security Council member, weighs in. "[These bombs] were not sophisticated foreign-made intelligence provided devices," says McCaffrey.

  • Guiliani: Speculation on Attacks Would Be a Mistake  Tuesday, 16 Apr 2013 | 3:29 PM ET

    Former Mayor of New York City Rudy Giuliani, who guided his city through the Sept. 11 attacks, said any speculation in the case of the Boston marathon attacks would be a mistake.

  • Boston Marathon Bombings Aftermath  Tuesday, 16 Apr 2013 | 3:00 PM ET

    Two explosions went off near the finish line of the Boston Marathon on Monday; 3 people died, and 176 people were hospitalized due to injuries, reports CNBC's Scott Cohn.

  • Social Media & the Boston Bombings  Tuesday, 16 Apr 2013 | 2:57 PM ET

    Social media has made an impact after the Boston bombings. There were more than 1.5 million tweets mentioning Boston just after 4:30 ET.

  • Too Complacent About Safety?  Tuesday, 16 Apr 2013 | 2:53 PM ET

    The tragedy at the Boston Marathon on Monday was a terrible reminder of our safety. David Ropeik, Ropeik & Associates, shares his opinions.

  • White House: Boston to be Handled As 'Act of Terror'  Tuesday, 16 Apr 2013 | 2:04 PM ET

    The finish line of a marathon is a high for runners, and of course that all changed in Boston yesterday, with CNBC's Scott Cohn.

  • National Security in Washington Spotlight  Tuesday, 16 Apr 2013 | 1:45 PM ET

    The latest on the terror events in Boston and how the nation's capital is responding, with CNBC's Eamon Javers.