UNITED NATIONS - The Obama administration has declined requests from UN human rights investigators for information on secret prisons and for private interviews with inmates at the notorious US military detention centre at Guantanamo Bay, The Washington Post reported Thursday. The American refusals are the latest instances of the US government resisting international human rights organizations efforts to learn about Bush administration practices, the newspaper said. In June, Secretary of State Hillary Rodham Clinton turned down a request from the top UN anti-torture official for a meeting in Washington to discuss practices at secret CIA detention centres and at Guantanamo Bay, despite the administrations avowed commitment to being open to greater scrutiny by the UN. Two UN human rights researchers, Martin Scheinin and Manfred Nowak, separately requested visits to the Guantanamo Bay facility in recent months and were turned down. Scheinin, Nowak and two other UN experts also requested details on the secret CIA prisons history, locations and detainees. The answer we received from the United States is meaningless. There is no meaningful information, Nowak was quoted as saying. Theyre just repeating that the Obama administration stopped using secret places of detention. US officials said that they support the work of the UN human rights researchers but that they are constrained in releasing information on sensitive intelligence matters. They insist that they have not formally closed the door on visits to Guantanamo Bay. Many UN human rights advocates say that President Obama has ended the worst practices of the Bush administration, including harsh interrogation techniques, such as waterboarding, that the United Nations considers torture. But they say the old practices damaged the international human rights system, making it easier for brutal regimes to justify abuses. Obama has set an example of what a leader can do, in terms of policy and practice, to uphold the total prohibition on torture, Navanethem Pillay, the UN high commissioner for human rights, said last month. But there is still much to do before the Guantanamo chapter is truly brought to a close. The UN team probing secret prisons plans to publish a major report this year. The project will review the broader history of clandestine detention centres, starting with their use in Latin America from the 1970s onward, then delving into the Bush administrations secret detentions and scrutinizing other countries suspected of still using such prisons.