The claim was contained in a defense filing last week that asked U.S. District Judge Brian Cogan to order Guzman released from an ultra high-security wing of a Manhattan jail that's housed alleged terrorists and mobsters, and be allowed in the general inmate population and receive more visitors. Guzman, 59, was brought to the United States in January to face charges that he oversaw a multi-billion dollar international drug trafficking operation responsible for murders and kidnappings. [...] he's has been locked in his windowless cell for 23 hours a day with only a radio for company, the defense papers said.