The FBI urges anyone with information about either of the men pictured here to call 1-800-CALL-FBI. They are considered to be both armed and extremely dangerous.
The Sept. 11 terrorist attack was a wake-up call for cities across the country -- they needed to be ready for terrorism. By all indications thus far, the response of Boston police and fire officials is an example of how far cities have come in preparing for terrorism-inflicted disasters.
In the minutes after two bombs detonated at the Boston Marathon, countless regular people pitched in to help first responders tend to the wounded. One of those was Dr. Chris Rupe, a Salina, Kan., surgeon who finished running the marathon seconds before the blast, and then pitched in to help the injured.
The attacks on the Boston Marathon on Monday left three people dead, an unknown number of people maimed and scores wounded. Law enforcement gathered Tuesday morning to vow to get to the bottom of the attack, but as of yet they have no one in custody.
Two explosions near the finish line of the Boston Marathon killed at least three people and injured dozens more Monday afternoon, about 2:50 p.m. ET. Officials weren't saying what caused the explosions, but police departments across the eastern seaboard were raising their threat levels in response.
Omar Hammami, also known as Abu Mansoor Al-Amriki, grew up in Alabama, a typical American. But, eventually, he grew enamored with his father's Islamic heritage, converted, became an extremist and joined terrorist group al-Shabaab. Today, he's the most high-profile American terrorist.
A relative of Osama bin Laden appeared in a New York court last week in connection with the attacks on Sept. 11, 2001. While the trial is being criticized for being held on American soil, one reporter says the shift could be helpful to the Obama administration.
Before the French came in and pushed the Islamic militants out of the towns in northern Mali, many of the country's historic artifacts and cultural history were threatened. But because of the forethought of some Malians, including calligrapher Boubacar Sadek, the country's manuscripts were saved. For now.
A memo obtained by NBC News explains the legal rationale for the drone strike that killed an American citizen. But one critic says this memo, by expanding the definition of what constitutes an imminent threat to U.S. national security, this memo is distinctly different from the legal justification for torture.
The alleged plotters behind the 9/11 terrorist attacks were back in court this week, but quickly the hearings became less about the accused and more about the court itself. Some unknown entity censored the court's audio broadcast, which infuriated the defense and the judge, who ordered it not happen again.