• 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.

  • Investigators appear no closer to finding a suspect but are learning more about the bombs used, reports CNBC's Scott Cohn.

  • '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.

  • 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.

  • Congress Reacts to Ricin Letter & Boston Bombings     Wednesday, 17 Apr 2013 | 7:10 AM ET

    CNBC's Eamon Javers has the latest details on a ricin-tainted envelope sent to the office of Sen. Roger Wicker (R-MI). Sen. Jack Reed (D-RI) and Sen. Angus King (I-ME) discuss a poison-laced letter sent to Capitol Hill, as well the Boston Marathon bombings.

  • 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.

  • Bomb Evidence Analyzed at FBI Facility     Tuesday, 16 Apr 2013 | 7:00 PM ET

    Insight on the investigations of the Boston Marathon bombings, with Heather Higgins, Independent Women's Forum; Michael Leiter, former director of the National Counterterrorism Center; James Forest, UMass Lowell professor.

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

  • US Not as Vigilant as Europe on Terror: Analyst Tuesday, 16 Apr 2013 | 1:31 PM ET

    The deadly Boston Marathon bombings won't "change the way we live" in the United States, said Jack Jacobs, a retired U.S. Army colonel who received the Medal of Honor. "We haven't had attacks like they have in Europe."

  • Expect Heightened Security Measures: Expert     Tuesday, 16 Apr 2013 | 11:38 AM ET

    "There are no options taken off the table," said Michael Leiter, former Director of the National Counterterrorism Center, discussing how the bombings in Boston will impact domestic and global security measures.

  • We don't yet know who planned and executed this, said President Obama, but we will find who did this and bring them to justice. As we receive more information we will make sure to keep the American people posted, he added.

  • How Officials Plan to Protect a Nervous Public     Tuesday, 16 Apr 2013 | 8:08 AM ET

    Michael Leiter, former Director of the National Counterterrorism Center, discusses how authorities are likely to conduct the investigation and find clues to yesterday's Boston bombing, while keeping the public safe.

  • Who Did This? Boston Bombing Questions Remain     Tuesday, 16 Apr 2013 | 8:05 AM ET

    CNBC's Scott Cohn reports officials are sifting through the evidence for clues as to who is responsible for the deadly bombings in Boston on Monday.

  • Pres. Obama Increases Security Around the US     Tuesday, 16 Apr 2013 | 7:37 AM ET

    CNBC's Eamon Javers, reports the latest details on how the Federal government is responding to Monday's deadly bombings at the Boston Marathon.

  • The FBI has taken over the investigation of the bombings in Boston, reports CNBC's Eamon Javers. And, Col. Jack Jacobs, Medal of Honor Recipient, discusses what the deadly blasts means for Homeland Security measures.

  • Who Is Responsible For the Boston Attack?     Tuesday, 16 Apr 2013 | 5:30 AM ET

    James Forest, director of security studies at UMass-Lowell, tells CNBC that the perpetrators behind the Boston attack wanted media coverage but says that the fact that the attack hasn't been claimed is "kind of odd".