U.S. Warns Iran May Have Sent Encrypted Signal to Activate Sleeper Cells In America and Around the World

Federal alert urges heightened monitoring after intercepted transmission believed to originate in Iran following the death of Supreme Leader Ali Khamenei.

Washington, DC – U.S. intelligence officials have intercepted an encrypted transmission believed to have originated in Iran that may have been intended as an operational trigger for sleeper operatives outside the country,…