Charges Against Sinaloa Cartel’s Fentanyl Producer
Ivan Valerio Sainz Salazar, known as “Mantecas,” has been indicted in the U.S. for his alleged role as a leading fentanyl producer supplying pills to the Chapitos faction of the Sinaloa cartel. This announcement by federal prosecutors comes after his arrest by Mexican authorities in Sinaloa state.
The Department of Justice disclosed on Thursday that Sainz Salazar faces charges of fentanyl trafficking and weapons offenses. These charges relate to a purported conspiracy to manufacture and smuggle fentanyl into the U.S. for the Sinaloa cartel.
On January 19, 2026, Mexican law enforcement, including the National Guard and the Army, apprehended Sainz Salazar and several of his associates in Badiraguato, Sinaloa. According to Omar H. García Halfucci, Mexico’s Secretary of Security, Sainz Salazar was taken into custody alongside seven others, with authorities seizing firearms, vehicles, and a synthetic drug lab. Investigations are still in progress.
The indictment highlights that the Sinaloa cartel remains a significant force in fentanyl trafficking, contributing to the surge in overdose deaths across the U.S. Synthetic opioids, which are much stronger than heroin, have caused widespread devastation in several communities nationwide.
Investigators indicate that the Chapitos, led by Joaquín “El Chapo” Guzmán’s sons, supervise much of the cartel’s operations, deploying armed guards and military-grade weapons to secure drug labs and trafficking routes.
Prosecutors claim Sainz Salazar was the primary producer of fentanyl for the Chapitos between 2022 and 2025, involved in the manufacture of millions of pills while orchestrating drug deals under armed protection, and managing a lab that became central to the operation.
At 40 years old, Sainz Salazar faces severe penalties: a minimum of 10 years to life for conspiracy to import and distribute fentanyl, along with gun possession charges linked to the drug operation.
One of the weapon-related charges comes with a minimum sentence of 30 years, and another conspiracy charge could also lead to life imprisonment. U.S. Attorney Jay Clayton remarked that removing violent fentanyl dealers from the streets is crucial, emphasizing the importance of the charges against the primary producers linked to the Chapitos.
Recently, Joaquín Guzmán López, one of the Chapitos and the son of El Chapo, entered a guilty plea in federal court for drug trafficking and continuing criminal enterprise charges.
Guzmán López is part of a group of brothers who have taken over the Sinaloa cartel’s operations following El Chapo’s conviction and life sentence in 2019. Prosecutors accuse them of significantly increasing drug production and establishing an extensive network for moving large quantities of drugs, especially fentanyl, into the U.S.
In his plea, Guzmán López admitted to overseeing drug transportation into the U.S., largely through underground tunnels. His attorney noted that this plea would prevent him from facing a life sentence.
In July 2024, Guzmán López was arrested alongside notorious cartel leader Ismael “El Mayo” Zambada after they arrived in Texas on a private jet. This plea deal follows a similar agreement made by his brother Ovidio on charges related to human trafficking and money laundering.
Meanwhile, El Chapo is serving a life sentence in a maximum-security prison for orchestrating a multibillion-dollar drug operation, with allegations that his sons have taken a significant role in continuing that legacy.
