Years before Nemesio Ruben “El Mencho” Oseguera Cervantes became one of the most wanted cartel leaders in the world, his criminal career reportedly started on the streets of

Mexican officials said that about 80% of the recovered weapons in crime scenes were purchased in the United States and smuggled across the border.

Top security officials revealed details of the operation that led to the death of Mexico’s most wanted drug cartel leader.

Mexico's most-wanted fentanyl kingpin "El Mencho" reportedly killed after military forces tracked his romantic partner to secret meeting location.

(Corrects Oseguera's age to 59, not 60, in second paragraph) By Drazen Jorgic MEXICO CITY, Feb 22 (Reuters) - Mexican drug lord Nemesio Oseguera, commonly known as 'El Mencho,' infamous for the bloody trail of bodies he left behind in battles with government forces and rival gangs,