

Although it has been argued that he was the source of most of the money involved in the illicit financing of Ernesto Samper's presidential campaign, Herrera himself never spoke of the issue and was never formally involved in the investigation. Herrera always kept a very low profile and was never interviewed, and his name was almost never mentioned with that of the other leaders of the Cali cartel. It is believed that Herrera hired guerrilla forces such as Fuerzas Armadas Revolucionarias de Colombia (English: Revolutionary Armed Forces of Colombia) (FARC) and then guerrilla group 19th of April Movement ( Spanish: Movimiento 19 de Abril, M-19), to guard remote lab sites. The Herrera operation, according to the DEA, involved importing cocaine base from Peru and Bolivia, which would be trafficked via his own transportation to conversion laboratories in Colombia. Herrera was soon promoted to Cali cartel kingpin and given control over Jamundí in the south of the Valle, and Palmira and Yumbo in the north and east of the Valle. Herrera also ran one of the "most sophisticated and profitable money laundering operations", according to the United States Drug Enforcement Administration. He would later open up trafficking routes for the Cali Cartel through Mexico, with connections he had previously established. In 1983, Herrera went to Cali, Colombia, to negotiate supply and distribution rights with the Cali Cartel for New York City. In 1975, and 1978, Herrera was arrested on distribution charges in New York City for selling cocaine. Living in the United States, he also became a jeweler and precious metals broker until he began selling cocaine in New York City. While in high school, Herrera studied technical maintenance, experience that got him a job later in the United States. Herrera grew up in the Colombian town of Palmira, in the Valle del Cauca Department. Francisco Hélmer Herrera Buitrago also known as "Pacho" and "H7", (Aug– November 6, 1998) was a Colombian drug trafficker, fourth in command in the Cali Cartel, and believed to be the son of Benjamín Herrera Zuleta.
