How the U.S. Triggered a Massacre in Mexico

Landmark investigative report revealing how DEA intelligence about Zetas informants was shared with Mexican authorities who were themselves compromised by the Zetas. The leaked intelligence triggered the systematic destruction of the town of Allende, Coahuila in March 2011, killing an estimated 300 people.

The investigation demonstrated that US counter-narcotics cooperation with corrupt Mexican institutions could produce catastrophic consequences, and that the DEA’s intelligence-sharing protocols lacked adequate safeguards against institutional corruption.