Rejón Aguilar was born in Sabancuy,
Carmen Municipality, Campeche, Mexico, in 1976. On April 3, 1993, Rejón Aguilar enlisted in the Mexican Army in his home state of Campeche and in 1996 was assigned to Special Forces Airmobile Group (
GAFE). In 1997, he was assigned to Mexico's Federal Attorney General's Office (PGR) in the cities of
Reynosa and
Miguel Alemán in
Tamaulipas. In 1998 he was assigned to Saltillo,
Coahuila. He deserted the army in February 1999 and in March the same year, at the invitation of
Arturo Guzmán Decena, known as "The Z1" was integrated into the group of 14 former soldiers who founded
Los Zetas as the armed wing of the
Gulf Cartel. Rejón Aguilar oversaw the paramilitary training of new recruits and then oversaw
Gulf Cartel trafficking activities in the state of
Coahuila along with
Alejandro Treviño Morales. Rejón Aguilar is responsible for multi-ton shipments of
marijuana and multi-kilogram shipments of
cocaine from Mexico to the United States. In 2004, Rejón Aguilar coordinated a failed raid on the maximum security prison 'El Altiplano', as he attempted to liberate his boss
Osiel Cárdenas Guillén. According to government documents, his plan consisted of using 3 helicopters and over 50 Zeta members to liberate Cárdenas Guillén. In 2007 Rejón Aguilar was assigned to the streets of
Nuevo Laredo and
Miguel Alemán under the command of
Miguel Treviño Morales, where he remained until early 2009. After the split between the
Gulf Cartel and
Los Zetas in 2010, Rejón Aguilar was assigned as the regional coordinator in the states of central and northern Mexico. ==Kingpin Act sanction==