Did Iran send out Sleeper Cell signal? US alert flags encrypted broadcast after Khamenei's killing in Iran: Report

US intelligence agencies have reported intercepting an encrypted transmission believed to come from Iran, which may indicate the activation of sleeper cells in various countries. This alert follows the recent killing of Iranian leader Ayatollah Ali Khamenei, raising concerns about potential retaliatory actions by Iran. Sleeper cells, which are clandestine groups of operatives residing undetected within a country, can be mobilized to carry out attacks or espionage when signaled. The US authorities are particularly vigilant given the heightened geopolitical tensions and the implications of Khamenei's death on regional stability. Security agencies are now on high alert, analyzing the potential risks and implications of this transmission, as they work to prevent any coordinated actions that could endanger national security. Such developments underscore the intricate web of international relations and the persistent threat posed by non-state actors in the context of global terrorism and espionage.