El Mencho's ruthless cartel has long been considered one of the most brutal in Mexico, with its bloodthirsty leader using extreme torture and violence to instill fear into rivals.
Jalisco New Generation Cartel (CJNG) boss Nemesio Oseguera Cervantes, 59, was killed on Sunday in a joint Mexican military and US-backed operation in Tapalpa, a town of 20,000 people in the Sierra Madre mountains.
