More than 700 leaked secret files on the Guantnamo detainees lay bare the inner workings of America's controversial prison camp in Cuba. The US military dossiers ... reveal how ... many prisoners were flown to the Guantnamo cages and held captive for years on the flimsiest grounds, or on the basis of lurid confessions extracted by maltreatment. The 759 Guantnamo files, classified secret", cover almost every inmate since the camp was opened in 2002. More than two years after President Obama ordered the closure of the prison, 172 are still held there. The files depict a system often focused less on containing dangerous terrorists or enemy fighters, than on extracting intelligence. Among inmates who proved harmless were an 89-year-old Afghan villager, suffering from senile dementia, and a 14-year-old boy who had been an innocent kidnap victim. The documents also reveal: US authorities listed the main Pakistani intelligence service, the Inter-Services Intelligence Directorate (ISI), as a terrorist organisation. Almost 100 of the inmates who passed through Guantnamo are listed by their captors as having had depressive or psychotic illnesses. Many went on hunger strike or attempted suicide. A number of British nationals and residents were held for years even though US authorities knew they were not Taliban or al-Qaida members.