Initially , the massacre was overshadowed by the other mass graves in the northeastern state of Tamaulipas . But when Bernabé Monje Silva , alias '' M14 '' was arrested by the Federal police , he led them to the exact location of the bodies . He later confessed that there was a feud between several factions of the Sinaloa cartel for the control of the drug corridors in Durango . The area is a strategic drug trafficking corridor since it can connect with the border cities of Nuevo Laredo , Reynosa , and Ciudad Juárez . It is also an attractive pathway state and producer region , notorious for growing poppy and marijuana in the mountainous region known as the " Golden Triangle . " In addition , according to Mexican and U.S. intelligence , Joaquín Guzmán Loera ( '' El Chapo '' ) has been reported to have married in a small town in Durango and lived in the Sierra Madre mountains in 2007 and 2009 respectively
other mass graves
2011 San Fernando massacre
Gente Nueva