Mexico is investigating whether the US lied about its role in the 2024 capture of Sinaloa cartel founder Ismael 'El Mayo' Zambada García, an act that could amount to a violation of Mexican sovereignty.
Key facts
- Mexico has launched an investigation into US involvement in the 2024 capture of Ismael 'El Mayo' Zambada García.
- The US has long denied playing any role in the operation on Mexican territory.
- Local outlet Pie de Nota reported the FBI was involved in the capture, according to the Guardian.
- Zambada García is a founder of the Sinaloa cartel.
- A confirmed US role could constitute a violation of Mexico's sovereignty.
Mexico has launched an investigation into whether the United States lied about its involvement in the capture and secretive transfer of a top Sinaloa cartel member in 2024, according to the Guardian. The inquiry centers on what officials describe as a potential violation of the country’s sovereignty.
At the heart of the matter is Ismael ‘El Mayo’ Zambada García, a founder of the Sinaloa cartel, who was detained and moved from Mexican territory in 2024. The circumstances of his capture and transfer have been the subject of scrutiny since the operation took place.
The US has long denied that it played any role in the operation to detain Zambada García inside Mexico. That denial is now being tested by the Mexican investigation.
Recent reporting by the local media outlet Pie de Nota suggested that the FBI was involved in his capture, according to the Guardian. This reporting appears to have prompted renewed questions from Mexican authorities about the accuracy of previous US statements.
If the US role is confirmed, it would represent a potential breach of Mexican sovereignty, given that any foreign operation on Mexican soil would fall outside agreed frameworks between the two countries. The investigation seeks to establish what actually occurred during the 2024 operation.
The Guardian noted that the reporting suggesting FBI involvement stands in contrast to the United States’ repeated denials, setting up a dispute over the true nature of one of the most significant cartel arrests in recent years.
Why it matters
The case touches on the sensitive issue of national sovereignty and the limits of US law enforcement operations abroad. If Mexico concludes the US acted on its territory and then misrepresented its role, it could strain relations between the two neighbors and reshape cross-border security cooperation.
Frequently asked questions
Who is Ismael 'El Mayo' Zambada García?
He is a founder of the Sinaloa cartel who was captured and transferred from Mexican territory in 2024.
What is Mexico investigating?
Mexico is investigating whether the US lied about its involvement in the 2024 capture and transfer of Zambada García, which could be a violation of Mexican sovereignty.
What did the FBI reportedly do?
According to reporting by local outlet Pie de Nota cited by the Guardian, the FBI was involved in the capture, despite long-standing US denials of any role.

