FBI Warns Of Active Sleeper Cells In Major US Cities
FBI Warns Of Active Sleeper Cells In Major US Cities...
The FBI has issued a confidential bulletin to law enforcement agencies warning of potential sleeper cell activity in at least three major US cities, according to sources familiar with the document. The alert, distributed late Monday, cites recent intelligence suggesting coordinated planning by individuals with suspected ties to foreign extremist groups.
Officials declined to name specific cities but indicated the threat appears concentrated in metropolitan areas with critical infrastructure. The warning comes just weeks after Homeland Security Secretary Alejandro Mayorkas testified before Congress about elevated domestic terrorism risks.
"We're seeing concerning patterns in financial transactions and communications," said a senior counterterrorism official who requested anonymity. The bulletin reportedly identifies behavioral indicators for sleeper agents, including sudden changes in employment and attempts to acquire restricted materials.
Social media platforms have amplified public concern following leaks about the bulletin. Twitter trends showed a 320% spike in "sleeper cell" searches Tuesday morning after an unverified screenshot circulated among security analysts. The FBI has neither confirmed nor denied the document's authenticity.
Counterterrorism experts note sleeper cells typically maintain years of low-profile activity before activation. "This isn't about imminent attacks," said former CIA operative Brian Jenkins. "It's about recognizing dormant networks that could be weaponized during geopolitical crises."
The Department of Justice recently unsealed indictments against four individuals in Texas and Ohio accused of providing material support to designated terrorist organizations. While unrelated to the current bulletin, prosecutors described similar tradecraft to what the FBI now warns about nationally.
Homeland Security Committee Chair Mark Green (R-TN) has demanded a classified briefing, telling reporters: "Americans deserve transparency about threats in their communities." The White House declined to comment, referring questions to the National Security Council.
Security consultant Mia Bloom noted increased chatter in encrypted forums since October's Israel-Hamas conflict. "We're seeing both foreign and homegrown actors testing vulnerabilities," she said. "Soft targets like power grids and transportation hubs remain primary concerns."
Local police departments have received updated guidance on suspicious activity reporting. In Chicago, counterterrorism units have doubled patrols near government buildings following the advisory. Similar precautions emerged in Los Angeles and Miami, though officials stress there's no specific, credible threat.
The bulletin coincides with heightened tensions overseas, including last week's ISIS-K attack in Moscow. Intelligence veterans caution against drawing direct connections but acknowledge global instability often inspires copycat plotting.
Public records show federal surveillance of suspected operatives has increased 17% since 2023. Civil liberties groups warn against profiling, while security hawks argue for expanded monitoring authorities. The debate mirrors post-9/11 tensions as lawmakers balance safety and privacy.
Next week's Senate Intelligence Committee hearing may provide more clarity. Until then, officials urge vigilance but stress there's no need for alarm. "The best defense remains informed communities and prompt reporting," said FBI spokesperson Samantha Shero.
