Led by the Beltran Leyva brothers, this Mexican drug trafficking organization worked with the Sinaloa Cartel before it seceded in 2008, managing the groups’s hitmen networks and controlling the state of Sonora and the lucrative port of entry in Acapulco. After a series of arrests and deaths at the hands of rivals and government authorities, the Beltran Leyva Organization (BLO), once one of Mexico’s bloodiest and most powerful criminal organizations, is gravely weakened. It is currently run by Hector Beltran Leyva, alias "El H," the middle sibling. The arrest of Alfredo Beltran Leyva, alias "El Mochomo," in 2008 sparked a battle with the Sinaloa Cartel, and the group's precipitous fall.