WPBF 25 News sat down with a former FBI agent who explained what 'sleeper cells' are and how good they are at blending in.

U.S. counterterrorism agencies monitor suspected sleeper cells following joint strikes on Iran that killed Ayatollah Khamenei ...

Several people on social media expressed fears about possible sleeper cell attacks amid reports that Iran's Khamenei was dead ...

(NewsNation) — As tensions escalate between the United States and Iran, the threat of sleeper cells has “never been higher,” according to U.S. Customs and Border Protection, although no specific or ...