The commission in its report in 2006 had concluded that Bose did not die in the alleged air crash of 1945 and the ashes at the Renkoji temple are not his ashes.

The report did not comment on his alleged stay in Russia after 1945 and called for further investigation into the matter.

The Netaji Chetna Mancha - an organisation of researchers - in the letter has claimed the existence of evidence suggesting that Netaji was active in China, Vietnam and other countries well after the alleged plane crash in Taipei in 1945.

"The Mukherjee Commission report was half done and incomplete, that is why it was rejected in 2006. Moreover, Justice M.K. Mukherjee has confessed in a documentary titled 'The Black Box of History' that the unnamed saint in Faizabad (Uttar Pradesh) was Netaji," Jayanta Choudhury, the general secretary of the Mancha said in the letter.

Choudhury also referred to a judgment by the Lucknow Bench of the Allahabad High Court directing the Uttar Pradesh government to form a panel to probe the identity of Gumnami Baba alias Bhagwanji of Faizabad, who many claim was Netaji Subhash Chandra Bose.

Choudhury, who deposed before the commission, has also claimed that declassified CIA reports and other documents reveal that Bose was alive and active in Russia, China, Vietnam and other countries even after the alleged plane crash.

"In consideration of the above facts, initiative should be taken to re-institute a high-powered commission with national and international jurists for completing the fractional report of the Mukherjee Commission and give justice to the national hero," Choudhury said in the letter.

Several organisations including a host of Bose's descendants have been running a countrywide campaign calling for declassification of 'secret files' on the nationalist leader, claimed to be in the possession of the central government.

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