The Twins Who Brought Down El Chapo

How Pedro and Margarito Flores Built a Drug Empire—and Then Betrayed the World's Most Powerful Cartel Boss

For years, Pedro and Margarito Flores lived a life most drug traffickers only dream about.

They moved multi-ton quantities of narcotics across the United States. They handled hundreds of millions of dollars. They dealt directly with some of the most feared cartel leaders in the world.

And then they walked away.

In one of the most remarkable reversals in modern organized-crime history, the identical twins from Chicago helped build an empire for Joaquín "El Chapo" Guzmán before secretly turning against him and becoming two of the most important witnesses ever used by the U.S. government against the Sinaloa Cartel.

Born in Chicago on January 18, 1981, Pedro and Margarito Flores grew up in the city's Little Village neighborhood. Their father, Margarito Flores Sr., was himself involved in drug trafficking, exposing the brothers to the narcotics trade from an early age.

By their late teens, the twins were already moving significant quantities of marijuana and cocaine throughout Chicago.

Unlike many street-level dealers, the Flores brothers possessed a rare talent for logistics. They understood transportation networks, supply chains, and distribution systems. Those skills eventually attracted the attention of Mexican cartel leaders looking to expand their reach inside the United States.

The relationship transformed their lives.

By the early 2000s, the brothers had become major wholesale distributors for the Sinaloa Cartel. Federal authorities later estimated they were responsible for distributing thousands of kilograms of cocaine and heroin, as well as massive quantities of marijuana, throughout Chicago and other U.S. cities.

At their peak, investigators estimated the twins were moving as much as $2 billion worth of narcotics.

The money seemed endless.

The brothers purchased luxury homes, expensive vehicles, and traveled frequently. Drug proceeds were often delivered in bulk cash shipments. According to court records, they sometimes handled millions of dollars in a single transaction.

But success created new problems.

As their importance within the cartel increased, so did the danger.

The twins dealt directly with El Chapo and other senior Sinaloa figures, including Ismael "El Mayo" Zambada. They witnessed kidnappings, murders, and threats that reminded them exactly how disposable cartel associates could become.

The turning point came around 2008.

According to later testimony, the brothers began to fear they would eventually be killed—either by rivals, law enforcement, or the cartel itself.

Rather than wait, they made a decision almost unheard of in cartel history.

They contacted federal authorities.

For years, the Flores twins secretly cooperated with the Drug Enforcement Administration while continuing to operate inside the cartel. Wearing recording devices, they captured conversations with senior cartel figures and helped investigators map one of the largest narcotics organizations in the world.

The evidence proved invaluable.

Their cooperation became a cornerstone of the U.S. government's case against El Chapo.

When Guzmán finally stood trial in federal court in Brooklyn, New York, in 2018 and 2019, the Flores brothers took the witness stand. Jurors listened as the twins described delivering millions of dollars in cash, coordinating massive drug shipments, and working directly with the cartel leader.

Their testimony helped secure Guzmán's conviction on multiple counts of drug trafficking, money laundering, and criminal conspiracy.

In return, the brothers received dramatically reduced prison sentences.

Many critics viewed the deal as extraordinarily generous.

Federal prosecutors viewed it differently.

Without the Flores twins, one of the most powerful drug traffickers in modern history might never have been convicted.

Today, Pedro and Margarito Flores remain among the most successful cartel informants ever recruited by the United States government.

They made fortunes helping build El Chapo's empire.

Then they helped destroy it.