The gunman who opened fire on tourists at a famous pyramid site in Mexico was a Nazi sympathiser who idolised the two students behind the 1999 Columbine High School massacre, it emerged overnight.
Julio Cesar Jasso, 27, killed a Canadian holidaymaker and injured 13 other tourists before killing himself at the Teotihuacan archaeological zone about an hour outside of Mexico City.
Prosecutors investigating the shootings, who identified Jasso by a voter ID card he was carrying, are currently working on the theory that he was a ‘lone wolf.’
Today, it was claimed the suicide gunman was wearing a T-shirt with the logo ‘Disconnect & Self-Destruct’ on it, linked by Mexican press to the True Crime Community, which includes a dangerous subculture known as ‘Columbiners’ who obsess over school shooters Eric Harris and Dylan Klebold.
Monday’s attack occurred on the 27th anniversary of the infamous massacre when the teenagers murdered 13 students and one teacher in a shooting and attempted bombing at Columbine High School in Columbine, Colorado.
Mexican TV station Telediario reported a picture frame was found near Jasso’s body containing an AI-generated image where he appeared next to Harris and Klebold, who also killed themselves after committing their April 20 1999, horror massacre.
It also said authorities had discovered photographs of Jasso on social media making Nazi salutes.
Before turning his gun on himself, the Mexico City local killed a Canadian woman and injured three Colombians, two Brazilians, six Americans and a second Canadian.
The gunman who opened fire on tourists at a famous pyramid site in Mexico has been identified as Julio Cesar Jasso. Prosecutors investigating the shootings identified the gunman by a voter ID card he was carrying (pictured)
Pictured: Police officers and forensic experts work in the area where a shooting attack was reported on at the Teotihuacan archaeological zone, in Teotihuacan, Mexico, 20 April 2026
The apparent gunman stands near people lying on the steps of a pyramid during an incident where authorities say a Canadian woman was shot dead and several others injured before the gunman killed himself at the Teotihuacan pyramids, a popular tourist and archaeological site, in San Martin de las Piramides, on the outskirts of Mexico City, Mexico, April 20, 2026
One of the Colombian nationals injured has been named as six-year-old Geronimo Gonzalez Castro, said to have been shot twice in his right leg.
A 13-year-old Brazilian, named Leticia Mendes Foista, was also shot, while the oldest victim is a 61-year-old American tourist.
At least five of the casualties are understood to have suffered gunshot wounds.
Mexican government officials who have identified the wounded survivors say they are in contact with their families.
The Canadian woman killed has not yet been officially named.
Footage from the scene of the attack showed the man identified as Jasso shooting from the top of the Pyramid of the Moon.
Tourists were seen lying face-down and covering their heads on the pyramid, Teotihuacan’s second-largest, as shots rang out and the solitary gunman prowled above them.
One of the visitors was overheard screaming: ‘Call the police.’
Holidaymaker Laura Torres said: ‘I saw the man who was shooting from the top of the pyramid? There were a lot of people. I heard more than 20 shots.’
Mexico’s Security Cabinet said in an initial statement, when the number of injured tourists still stood at six: ‘According to preliminary information, a man fired shots at the site and later took his own life.
‘Unfortunately, a woman of Canadian nationality lost her life and, so far, there is information about several people who were injured and are receiving medical attention. At the scene, a firearm, a bladed weapon, and live ammunition were secured.
Mexican President Claudia Scheinbaum said on X in the aftermath of the attack, which comes just seven weeks before the FIFA World Cup’s first match is held in Mexico City: ‘What happened today in Teotihuacan deeply pains us.
The Pyramid of the Moon, left, and the Pyramid of the Sun, back right, are seen along with smaller structures lining the Avenue of the Dead, in Teotihuacan, Mexico, March 19, 2020
The gunman who opened fire on tourists visiting a Mexican archaelogical site is said to have idolised the two students behind the 1999 Columbine High School massacre, it has emerged. Pictured: Columbine high school shooters Eric Harris (L) and Dylan Klebold appear in this video capture of a surveillance tape released by the Jefferson County Sheriff’s Department in the cafeteria at Columbine High School April 20, 1999 in Littleton, CO during their shooting spree which killed 13 people
This handout picture released by Mexican Red Cross shows Mexican paramedics of the Mexican Red Cross helping to a tourist injured at the Pyramid of the Moon at the Teotihuacan archaeological zone following a shooting in Teotihuacan, State of Mexico, on April 20, 2026
The gunman started shooting from above a pyramid, killing one Canadian tourist. Pictured: Mexica police arrive at the scene of the shooting
Police officers are seen at the Teotihuacan archaeological zone following the deadly shooting
‘I express my most sincere solidarity with those affected and their families. We are in contact with the Embassy of Canada.
‘I have instructed the Security Cabinet to thoroughly investigate these events and provide all necessary support.
‘Personnel from the Ministries of the Interior and Culture are already heading to the site to provide assistance and support, together with local authorities.
‘I remain attentive, and we will continue to provide timely updates through the Security Cabinet.’
