Newly-declassified documents show prisoners at the Guantanamo Bay Detention Center have been subjected to a variety of strong-arm tactics to end their hunger strike. br br The documents have been obtained from interviews with some of the detainees. The tactics are said to include long periods of solitary confinement, constant humiliation and excessive use of force. Back in February, a large group of inmates at Guantanamo prison went on hunger strike to protest their indefinite detention without charge or trial. The US military tried to end the strike by force-feeding the inmates through their noses. American officials now say the protest movement is over but human rights groups say at least 16 inmates are still refusing food.