The US President Barack Obama has ordered the federal government to buy a prison in Illinois to take a number of inmates from Guantanamo Bay. The move is a key part of Mr. Obama's plan to close the Cuba-based jail. The number of inmates for transfer to the Thomson Correctional Center has not been given officially, but US media report said it could be between 35 and 90. Senior officials said security would be upgraded, making Thomson the most secure jail in the country.<br/><br/>This is another important step on the way to closing Guantanamo Bay, but not the final one. Some 210 prisoners remain at Guantanamo.<br/>