- Mexico to beef up security at tourist sites after shooting at pyramids in lead up to World Cup AP News
- Canadian killed, six Americans among injured as gunman shoots tourists at Mexico’s Teotihuacan pyramids CNN
- Mexico to boost security at tourist sites ahead of World Cup after shooting at pyramids PBS
- Teotihuacán Pyramids Shooting: Gunman Carried Notes on U.S. Mass Shootings The New York Times
- Mexican pyramid gunman had Columbine materials — officials dw.com
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