Revision History

On April 20, 2026, a 27-year-old gunman named Julio César Jasso Ramírez opened fire on tourists from atop the Pyramid of the Moon at Teotihuacán, killing one Canadian woman and injuring 13 others before taking his own life. Investigators found AI-generated images of the shooter with the Columbine perpetrators and materials referencing the 1999 massacre, adding Teotihuacán to a growing list of over 80 Columbine-inspired attacks worldwide and raising urgent questions about security at Mexico's heritage sites weeks before the country co-hosts the FIFA World Cup.