Colombian authorities captured Carlos Ericson de Cardona , alias ` ` Sebastian '' He is the leader of the Oficina de Envigado . In 2011 , when a U.S. investigation led to charges against 20 people linked to the cartel , a U.S. attorney referred to the Oficina de Envigado as `` one of the largest and most dangerous drug cartels in Colombia . '' The group got its start working for Pablo Escobar .
Colombian authorities captured Carlos Ericson de Cardona , alias ` ` Sebastian '' He is the leader of the Oficina de Envigado . The group got its start working for Pablo Escobar .