Authorities Investigate Teotihuacán Attack with References to Hitler and Columbine

Armed attack in Teotihuacán

Links to Columbine

Extremist ideology under investigation

The armed attack that took place Monday at the Teotihuacán archaeological site left at least one person dead and 13 injured, all foreign nationals.

Why it matters: The case reveals possible connections between extreme violence, radical ideologies, and online communities that glorify mass killings.

The attacker was identified as Julio César Jasso Ramírez, a 27-year-old resident of Mexico City.

His identity was confirmed after authorities found a voter ID at the scene.

Teotihuacán attack: links to Columbine and Nazism

The Attorney General of the State of Mexico, José Luis Cervantes Martínez, reported that the armed attack at the Teotihuacán archaeological site was not spontaneous and that the attacker acted alone.

https://t.co/fqO1V4Mcan… pic.twitter.com/eMA3lS1dzn

— Proyecto Puente (@ProyectoPuente) April 21, 2026

Julio César Jasso Ramírez was wearing a face mask and a gray plaid shirt at the time of the attack.

At the scene, authorities found a framed image generated by artificial intelligence.

The image showed the attacker alongside Eric Harris and Dylan Klebold.

Both were responsible for the Columbine High School massacre in 1999.

That attack left 13 dead and 24 injured in the United States.

According to some reports, the attacker admired that event.

También habría mostrado admiración por Adolf Hitler, según UNO TV.

He also allegedly showed admiration for Adolf Hitler, according to Uno TV.

Photographs show him performing a Nazi salute.

The same investigation points to a possible extremist ideology.

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At the scene, authorities recovered a revolver, a tactical knife, and a backpack.

Inside the backpack were books and photographs.

The attacker was also wearing a watch with the timer set to zero.

This suggests possible prior planning of the attack.

It is not yet clear whether he died by suicide or from gunfire by authorities.

Symbolism and possible motivations

#MéxicoNuestro | Copycat effect: The shadow of Columbine in the Teotihuacán attack https://t.co/vZOaYybhWb pic.twitter.com/6JNlEYZKsc

— Diario CAMBIO 22 (@DiarioCAMBIO22) April 21, 2026

The attack took place on April 20, the same date as the Columbine massacre.

That day also coincides with Adolf Hitler’s birthday.

Julio César Jasso Ramírez left clues connecting to both references.

In the AI-generated image, he was wearing a shirt with a message.

The phrase read: “Disconnect and Self-Destroy.”

This expression is linked to the True Crime Community (TCC).

The TCC is a digital subculture that glorifies mass killers.

It is a decentralized movement with global presence.

Its origins trace back to online forums that emerged after Columbine.

Some research has linked this community to far-right extremist groups.

Recent cases reflect its possible influence.

In Argentina, a 15-year-old attacked a school in March.

That incident left one minor dead and eight injured.

The attack was also linked to the TCC.

In the United States, at least 15 attacks between 2024 and 2025 have been connected to similar influences.

These figures come from the Institute for Strategic Dialogue.

Victims and authorities’ response

The Teotihuacán attack resulted in the death of a Canadian tourist.

In addition, 13 people were injured.

Eight of them remain hospitalized.

Five have already been discharged.

Among the injured are six U.S. citizens.

They include four women and two adult men.

There are also three Colombians, including a six-year-old child.

Two Colombian women, aged 22 and 37, are among the injured.

Two Brazilian women, aged 13 and 55, were also injured.

The list includes a 29-year-old Canadian woman.

And a 32-year-old Russian citizen.

According to Telediario, the attacker exchanged gunfire with the National Guard.

This occurred before his death.

Authorities continue to investigate the events.

What’s next: Investigations are expected to clarify the motive behind the attack and the exact circumstances surrounding Julio César Jasso Ramírez’s death.