New Delhi, Feb. 23 -- The leader of Jalisco New Generation Cartel (CJNG), Nemesio "El Mencho" Oseguera Cervantes, was killed on Sunday following an operation led by Mexico's military, the government announced.

El Mencho was a former police officer who led the Jalisco New Generation Cartel, or CJNG, as it became one of the "most powerful and ruthless criminal organisations" inside Mexico, according to the US Drug Enforcement Agency, CNN reported.

Oseguera Cervantes, 59, was originally from Aguililla in the neighboring state of Michoacan, the Associated Press reported.

He had been significantly involved in drug trafficking activities since the 1990s.

Oseguera was wanted by US authorities, who offered a bounty of up to $15 million for in...