Authorities in Mexico are still figuring out how a regular Monday morning at the Teotihuacán pyramid complex, a premier tourist spot, turned into a scene of gunfire. Disturbing footage shows a gunman standing atop the Pyramid of the Moon, opening fire on tourists who scrambled for cover among the pre-Hispanic stones.

The aftermath left a 32-year-old Canadian woman dead and the gunman, 27-year-old Julio César Jasso Ramírez of Mexico City, dead from a self-inflicted gunshot wound. Tourists from Russia, Colombia, and Brazil were among those treated for injuries. Targeting international visitors presents a particular headache for the government, coming just weeks before Mexico co-hosts the men's football World Cup.

Mexican officials were quick to state the gunman acted alone, with no apparent link to the country's widespread cartel violence - a notable distinction from the violence unleashed by the Jalisco New Generation Cartel just two months prior. Attorney-General of Mexico State José Luis Cervantes Martínez confirmed the attacker planned and carried out the act independently.

Among the gunman's belongings, officials found a handgun, a bag of cartridges, a tactical knife, and, more tellingly, "literature, images, manuscripts apparently related to acts of violence which are known may have occurred in the United States in April 1999." A witness reported hearing the attacker refer to Columbine, the site of a school shooting 27 years ago to the day.

While Mexico is tragically familiar with cartel massacres, this incident appears to fall into a different category: the lone assailant mass killing. Attorney-General Cervantes pointed to a "psychopathic profile" and "copycat behaviour." It comes just three weeks after a teenager killed two teachers with an AR-15 assault rifle at his school in Michoacán.

Family therapist Valeria Villa described it as "a moment of transition" towards imitating the mass killing phenomenon seen in the United States, exacerbated by Mexico's own desensitizing backdrop of cartel violence. Most guns in Mexico, while not as easily purchased as in the U.S., are smuggled in from there.

President Claudia Sheinbaum, who recently hailed a 44% lower daily homicide rate in February 2026 compared to September 2024, offered sympathies to the victims. Her critics note that murder rates don't capture the full security picture, including tens of thousands of disappearances.

With the FIFA World Cup kicking off in Mexico City on June 11, the timing of this attack - following so closely on the heels of cartel violence - has understandably concerned fans. The administration is now working overtime to reassure visitors of their safety, a task not made easier by footage of a gunman firing from an ancient pyramid at foreigners.