Ontario premier Doug Ford recently spoke about “sleeper cells” during a press conference about a series of shootings in Toronto targeting synagogues and the U.S. consulate. What are sleeper cells? What are some notable examples of sleeper cells? Historically, sleeper cells in North America have been rare, with few confirmed cases of dormant agents activated for attacks. However, there is little evidence of true sleeper cells operating in North America involving creating long-term covers and extended dormancy.

Source: National Post March 12, 2026 11:32 UTC