"It will be released sometime in the future," Swamy said at a programme here when asked about declassification of Netaji files.
He said that America had given it in writing to the Mukherjee Commission, which probed Netaji's disappearance, that there was no record of any plane crash and no record of any charred body in any hospital in Taiwan.
"So this story (of death in air crash) is a bogus story," Swamy said while claiming that Netaji "was alive in 1947 and Nehru knew about it".
The Prime Minister's Office (PMO) in a recent RTI reply accepted that there were 41 files related to Netaji, of which two had been declassified, but refused to disclose the others, arguing that the "disclosure would prejudicially affect relations with foreign countries".
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Swamy said that Netaji had faked his death after both his friends Japan and Germany lost the war and escaped to Manchuria in China which was under Russian occupation.
When under house arrest by the British in then Calcutta, Netaji had escaped in 1941 to seek international support for his efforts to free his country and formed the Indian National Army with Japanese help. He went missing in 1945.