In a late-night communique on Thursday, the Cuban Government said that it had extradited a Chinese citizen, Zhi Dong Zhang, to the authorities in Mexico. Hours later, Mexico's security chief then confirmed his subsequent extradition to the United States on drug trafficking and money laundering charges. It brought to an abrupt end a months-long, audacious escape attempt by one of the world's most wanted fugitives. Known by various aliases including Brother Wang, Pancho and HeHe, Zhi Dong Zhang