MEXICO CITY (Reuters) -Mexican authorities captured Rafael Caro Quintero, one of the country’s most wanted drug lords accused of orchestrating the 1985 murder of a U.S. Drug Enforcement Administration (DEA) agent, two sources told Reuters on Friday. Caro Quintero was a founder of the Guadalajara Cartel, one of Latin America’s most powerful drug trafficking organizations during the 1980s. Authorities detained Caro Quintero in the Mexican state of Chihuahua, a Mexican Navy source said. A source in the federal government confirmed the arrest. The U.S. Federal Bureau of Investigation ranks Caro Qu…