From 1998 to 2008, two twin brothers distributed thousands of pounds of cocaine across Chicago and other major US cities.

Then Pedro and Margarito Flores started cooperating with the feds.

Originally sealed for the brothers’ protection, their testimony recently became available to the public. The documents reveal fascinating details about how one of the largest Mexican drug cartels functioned.

After their arrest, the Flores brothers went on record, giving information about a criminal who was even more sought-after: Joaquín Archivaldo Guzmán Loera, more widely known as “El Chapo,” the head of the Sinaloa cartel, one of the most powerful drug-trafficking organizations in the world.

In 2013, the cartel supplied 80% of the heroin, cocaine, marijuana, and methamphetamine flooding the streets of Chicago, according to the DEA.

On many occasions, the brothers collaborated with the cartel, which used a wide array of creative methods for transporting cocaine and money from Central America into the US. They once even passed the operation off as a humanitarian aid project.

Read more: http://www.businessinsider.com/margarito-and-pedro-flores-testimony-2014-11#ixzz3Je1MdHa3