Mexico�s government says Nemesio Oseguera Cervantes, known as �El Mencho,� has been killed.

�? ?Oseguera Cervantes led the Jalisco New Generation Cartel (CJNG), one of Mexico�s most powerful and violent criminal organizations.

�? ?Details surrounding his death were not immediately released.

�? ?Officials warn his death could trigger internal power struggles and renewed violence as factions compete for control.