Investigation and Analysis of Organized Crime
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Don Berna

Ex-Security Secretary Gustavo Villegas

Blurring the Line: The Security Secretary and the Medellín Mafia

The arrest of Medellín's security secretary in north Colombia has rocked the city establishment and challenged the political elite's prevailing narrative it has...

Colombia Elites and Organized Crime: ‘Don Berna’

By the end of 1993, Pablo Escobar was cornered. The cocaine king -- known as "El Patrón" -- was running out of money and options. His top assassins were either...
Is there something Pablo's death scene isn't saying?

Who Really Killed Pablo Escobar?

Extradited Colombia paramilitary leader and mafia boss Diego Fernando Murillo, alias "Don Berna," has claimed his brother fired the shot that killed infamous drug...
The city of Medellin

Medellin Truce Inches Groups Closer to Criminal Hegemony

The Medellin mafia, fragmented through bitter infighting, has called a truce and made an agreement with their rivals the Urabeños, seeking to rebuild the criminal...

Diego Fernando Murillo, alias ‘Don Berna’

Until his extradition to the United States in 2008, Diego Fernando Murillo, alias "Don Berna," was the leader of mafia group the Oficina de Envigado, which grew...


The Paisas first emerged as a rural militia that grew out of the demobilized AUC paramilitary army, with links to the Oficina de Envigado, but later became an...

Oficina de Envigado

The Oficina de Envigado has evolved from a debt collection agency for Pablo Escobar to a mafia federation that regulates almost all criminal activity in...