Mohammad Ahmad al-Qahtani was flown back to Saudi Arabia, to a treatment facility.
FBI officials believe they have not captured all of the people responsible for the Pan Am bombing that killed 270 people, including 190 Americans in 1988.
Jeffrey Rambo, an agent who acknowledged running checks on journalists in 2017, told federal investigators the practice is routine.
A senior al-Qaida leader was killed Friday in a U.S. airstrike, officials said.
ISIS says its members are responsible for a deadly suicide bombing on a Shiite mosque in southern Afghanistan.
The Supreme Court sounds ready to reinstate the death penalty for convicted Boston Marathon bomber Dzhokhar Tsarnaev.
The Taliban have ruled out cooperation with the U.S. to contain extremist groups in Afghanistan.
The document is the first investigative record to be disclosed since President Joe Biden ordered a declassification review of materials that for years have remained out of public view.
Twenty years ago, the 11th of September dawned as just a date. By midnight, it was 9/11, the staggering starting point for a new era of terror, war, politics, patriotism and tragedy.
The Biden administration says it will enhance its analysis of domestic terror threats in the U.S. as part of a new strategy to combat the growing threat.
As the political extremes have taken center stage in American life, domestic violent extremism has become the greatest threat to national security.
The Department of Homeland Security issued a national terrorism bulletin Wednesday warning of the potential for lingering violence from people motivated by anti-government sentiment after President Joe Biden's election, suggesting the Jan. 6 riot at the Capitol may embolden extremists and set the stage for additional attacks.
A 24-year-old St. Louis Park, Minn. man pleaded guilty Wednesday after he became a member of ISIS between 2015 and 2019.
A 22-year-old North Carolina man pleaded guilty to helping an international terrorist group plot to blow up a northern Minnesota courthouse, the U.S. Attorney’s Office announced Wednesday.
Michigan Gov. Gretchen Whitmer is calling for the suspects charged in a kidnapping plot to be called "domestic terrorists" instead of "militia" members.
A 23-year-old Minnesota man has been charged with providing material support to ISIS, officials announced Wednesday.
A 22-year-old Minneapolis woman who tried to join al-Qa'ida while she was a student at St. Catherine University in St. Paul has pleaded guilty to attempting to provide material support to a terrorist group.
A 28-year-old doctor from Pakistan, who formerly worked as a researcher at Mayo Clinic in Rochester, Minnesota, has been indicted by a federal grand jury for attempting to provide material to support the terrorist group ISIS.
Anyone caught intentionally spreading the novel coronavirus could face terrorism charges, according to a memo released by the department on Tuesday.
A 28-year-old doctor from Pakistan, who formerly worked at Mayo Clinic in Rochester, Minnesota, has been federally charged with attempting to provide material to support the terrorist group ISIS.