Terrorism | featured news

British police are reviewing security plans for Sunday's London Marathon, the next major international marathon, because of the deadly bombs that hit the race in Boston....

The Federal Aviation Administration is warning pilots that it has created a no-fly zone over the site of two explosions at the annual Boston marathon....

A series of explosions was reported near the finish line at the Boston Marathon on Monday, leaving two people dead and at least two dozen injured, according to the Boston Police Department. A third explosion was heard just before 4 p.m., about an hour after the first two blasts. The police were apparently aware of that device before the explosion occurred.

Could this be the deadliest smartphone app ever? A German security consultant, who's also a commercial pilot, has demonstrated tools he says could be used to hijack an airplane remotely, using just an Android phone. Speaking at the Hack in the Box security summit in Amsterdam, the Netherlands, Hugo Teso said Wednesday that he spent three years developing SIMON, a framework of malicious code that could be used to attack and exploit airline security software, and an Android app to run it that he calls PlaneSploit.

At least 53 people were killed and 90 others wounded Wednesday in an insurgent attack on an Afghanistan governor's compound where Taliban fighters were facing trial, local officials said. Nine insurgents with explosives strapped to their bodies stormed the compound in Farah province, bordering Iran, Reuters reported.

A would-be "underwear bomber" involved in a plot to attack a US-based jet was in fact working as an undercover informer with Saudi intelligence and the CIA, it has emerged. The revelation is the latest twist in an increasingly bizarre story about the disruption of an apparent attempt by al-Qaida to strike at a high-profile American target using a sophisticated device hidden in the clothing of an attacker.

Iraqi officials say four car bombs have struck Shiite mosques in Baghdad, killing at least 19 people and wounding 72.

A college student killed himself in a dorm at the University of Central Florida and authorities found explosives and guns in the room early Monday, authorities said, leading to the evacuation of hundreds of students and cancellation of morning classes.

Coordinated blasts in Baghdad killed at least 21 people near the heavily fortified Green Zone. NBCNews.com's Richard Lui reports.

Osama bin Laden’s son-in-law pleaded not guilty Friday to a charge of plotting to kill Americans. Sulaiman Abu Ghaith entered the plea through his lawyer in New York federal court.