Mexico killed drug lord El Mencho, then coordinated violence broke out across 20 states that led to fires, roadblocks and major disruptions nationwide.

The killing of Nemesio Rubén Oseguera Cervantes in an operation in Jalisco state is likely sending "psychological shockwaves" through Mexico's drug cartels, a former high-place U.S. official told CBC News on Monday.

He is identified as the top leader of the Jalisco New Generation Cartel, commonly known as CJNG. Under his leadership, the group evolved from a

The violence in Mexico comes following the death of cartel leader Nemesio Oseguera Cervantes, known as “El Mencho.” His killing prompted retaliatory actions by the Jalisco New Generation Cartel, World News,

The U.S. State Department had offered a reward of up to $15 million for information leading to the arrest of Nemesio Rubén Oseguera Cervantes, known as "El Mencho."