A 27-year-old Mexican man opened fire from atop the Pyramid of the Moon at the ancient Teotihuacán archaeological site, killing a Canadian tourist and injuring at least 13 others before turning the gun on himself. Mexican authorities have now identified the shooter and are examining evidence that suggests a disturbing fixation on the 1999 Columbine High School massacre.
Mexico's Security Cabinet confirmed in a preliminary statement that "a man fired shots at the site and later took his own life." Prosecutors identified the gunman as Julio César Jasso Ramírez, 27, of Guerrero, Mexico, using a voter ID card found on his body, The US Sun reported. Investigators are working on the theory that Jasso acted alone.
The dead tourist was a 32-year-old Canadian woman whose name has not been publicly released. Among the 13 injured were a six-year-old Colombian boy, a 13-year-old Brazilian girl, two Colombians, a Canadian, a Russian, two American nationals, a Dutch woman, and a 61-year-old American tourist described as the oldest victim. Eight victims remained hospitalized at the time of reporting, while the Brazilian teenager and four U.S. citizens had been discharged.
The attack struck one of Mexico's most famous tourist destinations, a UNESCO World Heritage Site that draws visitors from around the globe. And it landed on the 27th anniversary of the Columbine High School shooting in Littleton, Colorado, a detail investigators do not appear to regard as coincidental.
Authorities seized a firearm, a bladed weapon, and live cartridges from the scene. Newsmax reported that investigators also recovered bus tickets, an analog cellphone, and materials referencing violent incidents in the United States in April 1999, an apparent allusion to the Columbine massacre that killed 12 students and one teacher on April 20 of that year.
Mexican outlet Telediario reported that a picture frame was found near Jasso's body containing an AI-generated image in which he appeared alongside Columbine shooters Eric Harris and Dylan Klebold. Authorities also found photos on Jasso's social media accounts showing him making Nazi salutes.
The question of how artificial intelligence tools may intersect with violent extremism is not academic. Florida's attorney general recently opened a probe into OpenAI over ChatGPT's alleged role in a campus shooting, a sign that law enforcement and regulators are increasingly scrutinizing the digital trail left by attackers.
No confirmed motive has been stated by Mexican authorities. But the constellation of evidence, the anniversary timing, the Columbine imagery, the Nazi symbolism, paints a picture of a man steeped in the dark online subculture that glorifies mass killers.
Laura Torres, a Mexican tourist who witnessed the attack, told outlet N+ that she watched the gunman from below as he held hostages on the ancient stone platform. She described hearing more than 20 gunshots.
"I saw the guy who was shooting up on the pyramid... he had people as hostages, after a short time I saw him let one person down, a girl. For a moment I thought he was going to shoot her in the back, but no, thank God he let her go."
Torres said the gunman released hostages one at a time before the situation deteriorated further. She described seeing a wounded tourist lying partway up the pyramid. "She was lying about halfway up the pyramid... This shouldn't have happened," Torres said.
Fox News reported that seven of the injured were struck by gunfire, while others were hurt in the panic as crowds fled the pyramid site. Videos posted online showed the masked gunman holding a handgun and pacing around hostages who lay face-first on the stone platform.
Witness Brenda Lee, speaking to CTV, described the desperation of those trapped on the structure. One tourist jumped from the pyramid trying to escape.
"It was someone trying to get away, and he dropped to the next level, but he fell on his back, and it was... it just was awful."
The scene, tourists pinned down on an ancient monument while a lone gunman paced above them, recalls the kind of mass-casualty incidents that have become grimly familiar. A recent school shooting in Turkey, in which a 14-year-old was filmed making gun gestures hours before killing 10 people, underscored the same pattern of pre-attack signals that emerge only in hindsight.
Mexican President Claudia Sheinbaum responded on social media. Breitbart reported her statement: "What happened today in Teotihuacán deeply pains us. I express my most sincere solidarity with the affected individuals and their families."
Canadian Foreign Affairs Minister Anita Anand also weighed in. "As a result of a horrific act of gun violence, a Canadian was killed and another wounded in Teotihuacán," Anand wrote on X.
The New York Post confirmed that videos circulating widely on social media showed the masked shooter on the pyramid's summit, which helped explain why the footage gained rapid international attention. A tour guide told The Associated Press that some visitors threw themselves face-down on the ground while others scrambled to descend the pyramid.
The 1999 Columbine massacre remains one of the most studied and most imitated acts of mass violence in modern history. Eric Harris and Dylan Klebold killed 12 students and one teacher, injured at least 20 others, and fired a total of 188 rounds before taking their own lives. The victims ranged in age from 14 to 17. The two attackers had also placed two duffel bags containing 20-pound propane bombs in the school cafeteria.
In the decades since, a grim online subculture has formed around the Columbine perpetrators. Investigators and researchers have documented numerous subsequent attackers who expressed admiration for Harris and Klebold. That Jasso allegedly carried an AI-generated image of himself with the two Columbine shooters, and timed his attack to the anniversary, fits a pattern that law enforcement agencies worldwide have struggled to disrupt.
The broader question of how to track and intervene against individuals radicalized through online extremist communities remains unresolved. Recent high-profile shooting cases in the United States have highlighted the gap between the digital evidence trail attackers leave behind and the ability of authorities to act on it before violence occurs.
Several questions hang over the investigation. Authorities have not formally confirmed a motive, and the Columbine-obsession narrative rests largely on media reports from Telediario rather than an official prosecutorial statement. Whether Jasso had any prior criminal record, how he obtained the firearm, and whether anyone else knew of his plans are all open questions.
The hostage-taking described by witnesses has not been formally confirmed by authorities, it comes from eyewitness accounts given to media outlets. The number of injured also varies slightly across reports, with some outlets initially citing six injured before the count rose to 13 as more victims were identified.
Teotihuacán, one of the largest and most visited archaeological sites in the Western Hemisphere, sits roughly 30 miles northeast of Mexico City. The site draws hundreds of thousands of visitors each year. Its closure following the attack is a stark reminder that no landmark, however ancient or iconic, is immune to modern violence.
Incidents like these, whether at a construction site in Philadelphia or a pyramid in Mexico, share a common thread: ordinary people going about their lives, struck without warning by catastrophe they had no reason to expect.
A tourist site older than the Roman Empire. A gunman carrying an AI-generated tribute to two dead teenagers from 1999. Thirteen people bleeding on ancient stone. If there is a lesson, it is one civilization has been slow to learn: the worship of killers breeds more killing, and no algorithm or anniversary makes it anything other than evil.
