Mario Ramírez Treviño, a former leader of the Cártel del Golfo (Gulf Cartel), was confirmed dead by the U.S. Department of Justice on March 21. He had spent nearly eight years in a U.S. prison awaiting the resolution of his trial.
Known as "El Pelón" or "X20," Treviño took command of the cartel in 2013 following the murder of David Salgado, alias "Metro 4." He led the group for a short time before being arrested by Mexican authorities in August 2013. After spending nearly four years in a Mexican prison, he was extradited to the U.S. in 2017 on charges of money laundering and drug trafficking.
