Trinamool Congress MP, Sukhendu Sekhar Roy today demanded a probe into alleged destruction of three secret files on Netaji Subhash Chandra Bose.<br/><br/>Talking to a TV news agency, Mr. Roy said that three very files on Netaji were destroyed in 1972 by the then Congress government at the Centre and this must be probed. <br/><br/>Is party in a statement said, All India Trinamool Congress also urges upon the Central Government to publish the book without further delay.