The operational structure of Coronel's cartel undermined him with the 2007 assassination of Gabriel Duran, his right hand man.
According to police reports from that year, the emissaries of the two capos of Sinaloa conducted direct illegal transactions with other drug traffickers, attended to family matters and contacted officials from all the three levels of the government in the state.
There was no "beef" with Ignacio Coronel, leader of the Sinaloa Cartel in that plaza, yet, his business partners sought autonomy in Jalisco, without relying in the political connections of Coronel to resolve whatever problem.
Problems is what Coronel began to have the last two years, and they got progressively worst to the present, all the way to the end of his life on a Thursday morning in Guadalajara, the heart of his turf.
Police investigations show that Coronel's operational structure began to erode with the August 2007 murder of his confidant Gabriel Durán Gutiérrez "El Gavilán" in the Guadalajara Airport.
The decline continued in to 2008 with the execution of Jose Danell, a commander of the Federal Investigation Agency (AFI) that some official sources point as an important player in the federal protective structure of Coronel, and continued in October 2009 with the capture of Óscar Nava Valencia, "El Lobo."
This last incident was a double blow because Nava was arrested along with Angel Béjar Chávez, "El Chino", one of the leading distributors in the State of Illinois, United States, and also a close friend (compadre) of Coronel. Still during that time, "El Lobo" and his allies were also allies of Coronel.
In May of this year, Mexican authorities captured Juan Nava Valencia, "El Tigre." Coronel was losing too many men from within his circle and that would leave him alone to maintain control of his plaza. He must have known that he could not count on El Chapo or El Mayo for help.
Since last year, members of rival groups to Ignacio Coronel were caught and detained in Jalisco (the domain of Coronel) by the Public Security Secretariat (SSP).
On December 22, 2008, the SSP state captured the alleged operator of the Juarez Cartel, Angel Orlando Garcia Urquiza, including his girlfriend Miss Sinaloa Laura Elena Zuniga Huízar along with five handguns, 633 rounds of ammunition, at least 16 cell phones and $100,000 (dollars).
On May 22, in San Cristobal de la Barranca the same corporation of the SSP captured 18 gunmen disguised as soldiers working for the group of Valencia, who were in possession of an arsenal of weapons, and on July 25 six members of "La Familia Michoacana" were captured in Mazamitla.
These three different criminal groups had something in common, they were enemies of Colonel. Some had broken away from him this year, though they were not the only rival group of Coronel attemting to move in on his turf. Both "Los Zetas" and the groups of José Luis y Esteban Rodríguez Olivera, "Los Güeros" from Tecalitlán, also sought to eliminate "El Nacho."
At the end Coronel would lose his life and his structure would finally crumble to the ground. He was left without protection from the most powerful Capos in Mexico, the same ones who have searched for refuge in Jalisco from Sinaloa. Now, who will take over the plaza in Jalisco?