A newly intercepted coded transmission believed to originate from Iran has triggered an urgent global security alert, intensifying fears that sleeper operatives embedded abroad could be waiting for precisely this kind of signal to act.

Intelligence officials in the United Statessay the message may represent a covert signal designed to communicate with clandestine agents outside Iran. The alert has amplified international concern at a moment of extraordinary geopolitical tension following a major military escalation in the Middle East.

Authorities stress there is no confirmed threat tied to any specific location. Yet the nature of the transmission has prompted law enforcement agencies to increase monitoring of suspicious communications channels worldwide.

A federal alert circulated to law enforcement agencies warned that analysts had intercepted encrypted communications believed to have originated inside Iran. Preliminary signals analysis suggested the transmission could function as an 'operational trigger' for sleeper operatives located outside the country.

Officials said the message appeared to be encoded and directed at clandestine recipients who possess a matching encryption key. Such transmissions are commonly used to pass instructions to covert operatives without relying on conventional internet or mobile networks that intelligence agencies routinely monitor.

The alert explained that the communication was transmitted through what analysts described as a newly identified broadcast station with international reach. The station appeared to relay messages across multiple countries, a characteristic that raised concern among intelligence officials studying the transmission.

Authorities acknowledged that the exact content of the message remains unknown. However, the presence of a coded broadcast designed for recipients with specific encryption credentials suggested the communication could be intended for covert operatives already positioned abroad.

Officials warned that such transmissions could be used to 'activate or provide instructions to prepositioned sleeper assets operating outside the originating country'. The possibility that operatives embedded overseas could receive instructions through this channel has prompted heightened situational awareness among counterterrorism units.

🚨BREAKING: THE US BELIEVES IRAN HAS SLEEPER CELLS ALL ACROSS THE COUNTRY

The intercepted transmission emerged during a period of severe geopolitical tension following thekilling of Iran's Supreme Leader Ayatollah Ali Khameneiin a joint United States and Israeli strike on 28 February 2026.

Source: International Business Times UK