Julio César Jasso Ramírez, identified by the authorities as the perpetrator of the armed attack in the archaeological zone of Teotihuacán, was a man who, according to initial investigations, had for years constructed a personal narrative marked by a fascination with historical massacres, extremist symbology and a progressive distancing from reality.
According to information obtained by the Attorney General’s Office of the State of Mexico(FGJEM), the aggressor, 27 years old and originally from the southern state of Oaxaca, was an individual who acted alone, with a previously planned behavior and with signs of a severe psychological or psychiatric disorder.
Alarming profile: prosecutor points to mental disorder
“It casts a psychopathic profile.”
Authorities confirmed that the attacker at the Teotihuacan archeological site was influenced by the 1999 Columbine, USA school shooting.https://t.co/4950yAwcG9
– Joaquín López-Dóriga (@lopezdoriga) April 21, 2026
For Attorney General Jose Luis Cervantes Martinez, rather than a traditional motive, the case points to a mental disorder.
“I wouldn’t talk about a motive, I would talk about a psychopathy, a condition, a disease.”
The official stated that Jasso Ramirez seemed to live in a “reality of his own”, disconnected from his surroundings.
According to initial investigations, Jasso Ramirez was obsessed with episodes of mass violence outside of Mexico, particularly in the United States.
Among his belongings, authorities found literature, images and manuscripts allegedly related to the Columbine massacre, which occurred on April 20, 1999.
According to local media, images were even found in which he appeared giving the Nazi salute.
As well as montages elaborated with artificial intelligence where he was seen with Eric Harris and Dylan Klebold, the perpetrators of that school massacre.
The authorities maintain that this fascination was not recent.
Some of the photographs released suggest that as a teenager, around the age of 17, he was already showing an affinity for this type of symbology and characters.
(Filed under: Teotihuacan attacker profile).
Investigation reveals planned attack
🔴 Julio Cesar: Teotihuacan bombing shooter identified; he was a Hitler fanhttps://t.co/3cmaXKXCfo
– Milenio (@Milenio) April 21, 2026
The prosecution is investigating the case under the hypothesis of “copycat” behavior, i.e. the imitation of patterns of violence inspired by previous events.
According to the prosecutor, evidence found in small handwritten notes, as well as in his personal belongings, suggests that Jasso Ramírez sought to replicate actions committed in other latitudes and at other times.
In these fragments of paper, according to the investigation, the attacker himself reportedly wrote that he acted alone.
And that he obeyed orders from an alleged entity “that is not of this land”, an element that, for the authorities, reinforces the line of a possible mental disturbance.
The profile also shows a methodical person.
The FGJEM assured that the attack was not spontaneous.
Preliminarily, it is known that he visited the archaeological site on several occasions.
He stayed in nearby hotels and made previous tours to study the place and plan his aggression (Archived as: Ataque Teotihuacán profile of the attacker).
I wouldn't speak of a motive, I would speak of pyschopathy
José Luis Cervantes
Investment, planning and fatal outcome of shooting revealed
Julio César Jasso, attacker of the shooting in Teotihuacán, bought the weapon he used for 40,000 pesos and ballistic cartridges for 10,000 pesos https://t.co/BmBeTbEXl2
– El Universal (@El_Universal_Mx) April 21, 2026
In addition, he invested around 50,000 pesos (US$2,875) in preparation for the attack.
Including the purchase of a .38 caliber special revolver pistol, ammunition and accessories such as gloves, knives, glasses and tactical backpacks.
For the prosecution, these elements reveal a lengthy preparation process and a decision taken in advance.
Jasso Ramírez died at the scene after injuring himself with the weapon.
After being wounded in the leg during the intervention of the National Guard.
On April 20, Julio Cesar Jasso carried out a shooting at the Pyramid of the Moon, located in the Teotihuacan Archaeological Zone.
The first violent event of this type recorded since its inauguration on October 12, 1987.
Seven people were shot in a shootout that left 13 injured.
All of them foreign tourists, and one deceased Canadian national (Filed as: Teotihuacan Attack: profile of the attacker).
With information from EFE
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