Terrorism

"U.S. citizens are strongly encouraged to maintain a high level of vigilance," the agency said on its website.

Mohammad Ahmad al-Qahtani was flown back to Saudi Arabia, to a treatment facility.

The death sentence of convicted Boston Marathon bomber Dzhokhar Tsarnaev was reinstated Friday by the U.S. Supreme Court.

Boston Marathon bomber Dzhokhar Tsarnaev's $1,400 COVID-19 stimulus payment can be used to help pay the millions of dollars he is ordered to pay his victims, a judge has ruled.

Saturday's attack marked the first known time that a suicide bomber has killed victims in eastern Congo, where an Islamic State group affiliate earlier this year took responsibility for a suicide bombing near another bar in Beni who had caused no other casualties.

While DHS said it had no credible information on a specific threat, the agency warns in its latest national terrorism advisory bulletin that mass gatherings for the upcoming religious holidays could be potential targets.

A senior al-Qaida leader was killed Friday in a U.S. airstrike, officials said.

The Supreme Court sounds ready to reinstate the death penalty for convicted Boston Marathon bomber Dzhokhar Tsarnaev.

An Islamic State suicide bomber struck at a mosque in northern Afghanistan on Friday, killing at least 46 people and wounding dozens.

Homeland Security has issued a terrorism alert ahead of the 20th anniversary of 9/11.

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.

The Department of Homeland Security says violent extremists may seek to exploit the easing of COVID-19-related restrictions across the United States to conduct attacks.