(CNN) โ How did an alleged cartel kingpin who evaded capture for more than half a century end up in the hands of US federal agents?
According to officials, it started with an act of betrayal.
Details are still emerging about what led last week to one of the most significant and stunning cartel busts in recent memory.

US officials whoโve spoken with CNN say a key player in the operation to arrest Sinaloa cartel co-founder Ismael โEl Mayoโ Zambada was another major cartel figure who was arrested beside him.
Joaquรญn Guzmรกn Lรณpez, one of the sons of convicted cartel boss Joaquรญn โEl Chapoโ Guzmรกn, duped Zambada and orchestrated their arrest, officials told CNN.
Zambadaโs lawyer described what happened in harsher terms Sunday, accusing Guzmรกn Lรณpez of kidnapping.
โJoaquรญn Guzmรกn Lรณpez forcibly kidnapped my client. He was ambushed, thrown to the ground, and handcuffed by six men in military uniforms and Joaquin. His legs were tied, and a black bag was placed over his head,โ attorney Frank Pรฉrez said in a statement sent to CNN.
โHe was then thrown into the back of a pickup truck and taken to a landing strip. There, he was forced onto a plane, his legs tied to the seat by Joaquin, and brought to the U.S. against his will. The only people on the plane were the pilot, Joaquรญn and my client,โ Pรฉrez added.
U.S. officials had previously told CNN that Zambada, 76, thought he and Guzmรกn Lรณpez were flying to northern Mexico to look at real estate. But instead, the officials said, their small private plane landed north of the border near El Paso, Texas, where US authorities were waiting on the tarmac.
So far, we havenโt heard Guzmรกn Lรณpezโs account of what happened. The 38-year-old is expected to appear in federal court Tuesday in Chicago, his attorney, Jeffrey Lichtman, told CNN.
Lichtman said in an email Saturday that heโd appear in court with Guzmรกn Lรณpez and added, โIโm looking forward to seeing Joaquin and working on the case with him.โ He declined further comment.
Zambada pleaded not guilty to all charges in his first federal court appearance Friday. Sundayโs accusation from his attorney was the latest twist in a case that seems to get murkier with each account that emerges.
One cartel expert told CNN heโs dubious of some details officials have shared.
โIt would not surprise me at all if the story changes from today to tomorrow, or next week,โ said InSight Crimeโs Steven Dudley, whoโs spent more than a decade investigating drug trafficking and organized crime.
And as reporters pressed for answers in a contentious press conference Friday, Mexicoโs president suggested he, too, has many questions about what occurred.
โThe government of the United States has to give a complete report. It canโt be just general statements,โ President Andrรฉs Manuel Lรณpez Obrador said. โThere has to be transparency.โ
This much is clear: The arrests of Zambada and Guzmรกn Lรณpez mark a major development in decades-long efforts to capture and prosecute alleged cartel bosses. And the details revealed so far about what led to this dramatic moment offer a telling glimpse into the inner workings of what authorities describe as one of the worldโs most notorious and nefarious criminal enterprises.
Authorities had closed in on โEl Mayoโ before
It wasnโt the first time authorities had Zambada in their sights.
In a 2010 interview with the Mexican magazine Proceso, Zambada said Mexicoโs military had come close to capturing him at least four times before.
โI fled through the highlands, where I know the branches, the streams, the rocks, everything. They catch me if I am still or if I am careless, like El Chapo,โ he said.
At the time, Zambada told Proceso that fear about being captured weighed on him constantly.
โIโm terrified that theyโll lock me up,โ he said.
That 2010 interview was one of the last known public appearances for the notably lower-profile Zambada. His name surged into international headlines in 2018 and 2019 during the high-profile trial of Guzmรกn, whose lawyer argued that Zambada was the cartelโs true leader.
Lichtman, the defense attorney, also represented the elder Guzmรกn and alleged at the time that Zambada had bribed the Mexican government to frame El Chapo and remain free to run the cartel.
In 2021, US authorities raised the reward for information leading to Zambadaโs arrest to $15 million.
Over the years, Zambadaโs storied ability to evade capture was referenced in narcocorrido ballads about him. The 2022 corrido โSeรฑor Zambada,โ performed by El Fantasma and Enigma Norteรฑo from Zambadaโs perspective, includes the lines: โI know very well that they want to catch me, that the government wanted to lock me up. But they are going to keep wanting that, because no matter how much they look, they are not going to find me.โ
His elusive reputation also caught the attention of his enemies, former Drug Enforcement Administration agent Mike Vigil told CNN.
โMayo Zambada, prior to (Thursday) and over 50 years of involvement in the drug trade had never been captured, never served any time,โ Vigil said, โso he is highly respected even by his rivals.โ
Dudley of InSight Crime pointed to this aspect of Zambadaโs past when he told CNN en Espaรฑol he was skeptical of accounts that painted the Sinaloa cartel leader as an unwitting victim who was tricked into being captured.
โIโm not 100% convinced thatโs what happened. I see in El Mayo Zambada a person whoโs older. Heโs 76. I see a person whoโs also experienced, a person who knows exactly when and from where any deception is coming,โ Dudley said. โThatโs why heโs never stepped foot in a jail until yesterday. So I have my doubts. That is to say, I think that weโre still missing information.โ
Officials say they exploited a rift in the cartel
Officials who spoke with CNN said Zambada boarded a plane with Guzmรกn Lรณpez Thursday thinking theyโd be inspecting property together near the border. Zambada didnโt realize US investigators had exploited a rift in the Sinaloa cartel, one official said, and that Guzmรกn Lรณpez was in fact helping with Zambadaโs capture.
A long-simmering power struggle between Zambada and El Chapoโs sons, also known as the Chapitos, was about to boil over.
Agents from Homeland Security Investigations, which led the operation, were skeptical at first when Guzmรกn Lรณpez made the offer, an official familiar with the operation told CNN.
But as the plane they were flying in landed at the Santa Teresa airport near El Paso, Texas, on Thursday, federal agents were waiting.
One worker at the airport told Reuters that he saw a Beechcraft King Air land Thursday afternoon on the runway, where federal agents were already waiting.
โTwo individuals got off the planeโฆ and were calmly taken into custody,โ said the man, who declined to share his name out of concern for his safety.
โIt seemed like a pretty calm, arranged thing,โ he added.
The entire operation, one source told CNN, went off surprisingly smoothly given the gravity of the arrests and the disruption it could cause to drug trafficking from Mexico.
Now that Zambada and Guzmรกn Lรณpez are in US custody, authorities are ready to make the case against them.
Both Zambada and Guzmรกn Lรณpez face charges in the US for allegedly leading the cartelโs criminal operations, including its โdeadly fentanyl manufacturing and trafficking networks,โ US Attorney General Merrick Garland said in a statement after the arrests.
Top US officials trumpeted the arrests as a major victory. But some analysts were more measured in their assessment of the potential impact.
โItโs a historic capture, of course, and symbolic. But is it going to create a collateral effect or have an impact on drug trafficking? I really doubt that,โ Dudley said. โAs much because El Mayo had pulled back already from the day-to-day operations, and the world of drug trafficking is really now a different world from when he started. Itโs much more decentralized. Itโs much more like a franchise. There are contractors, subcontractors, other contractors. There are many parts that can be easily replaced.โ
Speculating on what could happen next, Mexicoโs president pointed to Zambadaโs own words in the 2010 Proceso interview. If he were captured or killed, Zambada said that effectively nothing would happen. In the world of drug trafficking, he said, whether capos are โlocked up, dead, or extradited, their replacements are already out there.โ
Experts say thereโs little doubt that these arrests, like past high-profile kingpin takedowns, will spur a new wave of violence as rival groups vie for territory and power.
And no matter what new details emerge about how they happened, the surprising and dramatic arrests wonโt soon be forgotten.
CNNโs Ione Molinares, Fidel Gutiรฉrrez, Abel Alvarado and Amanda Musa contributed to this report.
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