A former DEA agent who worked for many years overseeing the agency's financial operations has been accused of agreeing to launder millions of dollars in drug money for a Mexican cartel, specifically the Jalisco New Generation Cartel (CJNG), according to an indictment filed Friday in Manhattan Federal District Court.

The former agent, Paul Campo, worked for the DEA for about 25 years, according to the indictment, first as a special agent in New York and then rising to a senior position as deputy director of the Office of Financial Operations.

He retired in January 2016 and now runs a private consulting firm, according to the indictment.

Mr. Campo laundered about $750,000 for the cartel by converting cash into cryptocurrency, and agreed to launder much more: $12 million in total, according to the indictment.

He also paid for approximately 220 kilograms of cocaine under the assumption that the drug had been imported into the United States, according to the indictment.

Mr. Campo has been charged with narco-terrorism conspiracy, conspiracy to distribute narcotics, conspiracy to provide material support to a terrorist organization, and conspiracy to commit money laundering.

The Jalisco New Generation Cartel has been designated a foreign terrorist organization by the State Department and maintains its drug trafficking operations through violence and bribery of corrupt officials, according to the indictment.

The indictment also names another man, Robert Sensi, who is described as an associate of Mr. Campo.