Editing Alfredo Beltrán Leyva (section)

== Break away from the Sinaloa Cartel ==
The cartel was created by the four Beltrán Leyva brothers: Alfredo, Héctor, Carlos and Arturo.<sup>[3]</sup> Born in the Sinaloan countryside in the early 1970s, Alfredo and his brothers worked closely with Joaquín "El Chapo" Guzmán Loera, the leader of the Sinaloa Cartel, during decades of smuggling.<sup>[4]</sup>
The organization, run mainly by Alfredo, Arturo and Héctor,<sup>[5]</sup> formed as a splinter group of the powerful Sinaloa Cartel, which was led by Joaquín "El Chapo" Guzmán Loera.
<nowiki> </nowiki>After Alfredo was arrested, the Beltrán-Leyva brothers blamed Guzmán 
Loera and retaliated by forming the Beltrán-Leyva Cartel, and killing 
one of the Sinaloa cartel chief's sons in a grenade attack on a Culiacán shopping center. This sparked a war between the Sinaloa Cartel and the Beltrán-Leyva Cartel, which allied itself with Los Zetas.<sup>[3]</sup>