Nemesio Rubén Oseguera Cervantes, known as "El Mencho," was the leader of the notorious Jalisco New Generation Cartel prior to his death on Sunday.

From a small village in Michoacan to leading the powerful CJNG cartel across 60 countries, El Mencho built a vast drug network before being killed in a Mexican army operation in Jalisco

Who is the girlfriend of Rubén Nemesio Oseguera Cervantes “El Mencho”? She helped locate the cartel leader.

According to estimates from the U.S. Drug Enforcement Administration ( DEA ), Nemesio Oseguera Cervantes was considered one of the richest drug lords in the world. U.S. authorities calculated that his net worth could exceed $1 billion, although other assessments place it at no less than $500 million.

There is great concern about possible violence during El Mencho's funeral ceremonies.

Officials identified “El Tuli” as a top CJNG logistics and financial operator who acted as a right-hand man to "El Mencho."

Nemesio “El Mencho” Oseguera Cervantes was a feared Mexican drug lord and the leader of a ruthless cartel accused of masterminding efforts to push fentanyl into the United States.

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.

Deputy Secretary of State Christopher Landau described Nemesio "El Mencho" Oseguera as "one of the bloodiest and most ruthless drug kingpins."

Nearly 100 suspected cartel drug traffickers, including Nemesio El Mencho Oseguera Cervantes's brother, were transferred to the US for trial after a terrorist designation. Nemesio, the leader of the Jalisco New Generation Cartel,