Joaquin Guzman Lopez, one of four sons of the Sinaloa cartel’s ‘El Chapo’, changes his plea to guilty, court documents show.

A son of notorious Mexican drug lord Joaquin “El Chapo” Guzman will plead guilty next week in the United States to narcotics trafficking charges, according to federal court documents.

Joaquin Guzman Lopez, one of four sons of the jailed Sinaloa cartel leader “El Chapo”, originally pleaded not guilty after his arrest in July 2024 in Texas.

But federal documents released on Friday show that Guzman Lopez is to change his plea at a hearing set for Monday at the US District Court in Chicago.

Another of his three brothers, Ovidio Guzman, as part of a plea deal struck in exchange for a reduced sentence, pleaded guilty in July 2025 to conspiracy related to drug trafficking and two counts of participating in the activities of a criminal enterprise.

Ovidio Guzman also admitted that he and his brothers, known collectively as “Los Chapitos” (Little Chapos), had taken over their father’s operations within the cartel following his arrest in 2016.

Mexican broadcaster MVS Noticias said Guzman Lopez’s guilty plea could mean “a new chapter in the history of drug trafficking is about to be written”.

“This move has raised numerous questions about the possible ongoing negotiations between him and US authorities,” the news outlet said.

The ABC 7 Chicago news channel said federal prosecutors have said they will not now seek the death sentence for Guzman Lopez, and that there “is talk of a plea deal now in the works”.

He is due to appear in court in Chicago at 1:30pm (19:30 GMT) on Monday.

Two other “Chapitos” brothers, Ivan Archivaldo Guzman Salazar and Jesus Alfredo Guzman Salazar, have also been indicted on drug trafficking charges in the US but remain at large.

Their 68-year-old father, “El Chapo”, is serving a life sentence at a supermax federal prison in Colorado following his arrest and conviction in 2019.

Guzman Lopez was taken into custody last year when he arrived in Texas on board a small private plane, along with the cofounder of the Sinaloa cartel, Ismael “Mayo” Zambada.

Zambada claimed to have been misled about the destination and that he was abducted by Guzman Lopez to be handed over against his will to authorities in the US.

Following the arrest, clashes intensified between two factions of the Sinaloa cartel, headed, respectively, by the “Los Chapitos” brothers and Zambada. The infighting led to approximately 1,200 deaths in Mexico and about 1,400 disappearances, according to official figures.

Officials in the US accuse the Sinaloa cartel of trafficking fentanyl to the country, where the synthetic drug has caused tens of thousands of overdose deaths in recent years, straining relations with Mexico.

The cartel is also one of six Mexican drug-trafficking groups that US President Donald Trump has designated as global terrorist organisations.

Additional sanctions against the two fugitive “Los Chapitos” brothers were announced by Washington in June for fentanyl trafficking, and the reward for their capture was increased to $10m each.