Patrocinio Ejido Documented as Mexico's Largest Extermination Site — 1.5 Tons of Remains

Borderland Beat published a major investigative report on the Patrocinio ejido in San Pedro de las Colonias, Coahuila — identified as Mexico's largest documented extermination site. The 64-hectare property, linked to Los Zetas cartel operations between 2007 and 2012, contains approximately 70 clandestine graves and 91 incineration drums with an estimated 1.5 metric tons of human remains. Of the 158 victims positively identified since the site's 2015 discovery, the majority were migrants and perceived enemies of Los Zetas. The report underscores the scale of organized crime's atrocity infrastructure in Mexico and the ongoing challenge of forensic identification — thousands of remains from the site remain unmatched. The investigation arrives as the UN General Assembly prepares to consider Mexico's enforced disappearances crisis following the CED's historic April 2 escalation.