MONTERREY, Nuevo Leon – Mexican federal authorities raided a large warehouse outfitted by cartel members to allegedly manufacture industrial quantities of fentanyl in closer proximity to Texas.

The raid was announced on Sunday afternoon by Mexico’s Attorney General’s Office (FGR). The operation was coordinated with the U.S. Drug Enforcement Administration (DEA). Following an investigation, federal authorities obtained a search warrant from a judge in Nuevo Leon and raided a warehouse in the Ciudad Mitras Industrial Park and a home in the Pedregal La Silla neighborhood.

During the warehouse raid, authorities found a full-scale production laboratory and series of notebooks with formulas allegedly describing the manufacture of fentanyl. Police arrested a chemist identified as Guadalupe “A” on drug production charges.

The fentanyl laboratory is the first of its kind in Nuevo Leon. Authorities have not revealed which criminal organization they believe is linked to the plant.

Editor’s Note: Breitbart News traveled to the Mexican States of Tamaulipas, Coahuila, and Nuevo León to recruit citizen journalists willing to risk their lives and expose the cartels silencing their communities. The writers would face certain death at the hands of the various cartels that operate in those areas including the Gulf Cartel and Los Zetas if a pseudonym were not used. Breitbart Texas’ Cartel Chronicles are published in both English and in their original Spanish. This article was written by Tony Aranda from Nuevo Leon.