"The final days of Netaji is still a mystery. What happened to him, no one knows. History is incomplete. Netaji has not got the honour he deserved from the powers that be," Banerjee said at a government programme to observe his 118th birth anniversary here.
Along with some activists, several of Netaji's family members have been demanding release of secret files from government records which they said can solve the mystery of his disappearance in 1945.
"Netaji is one of the most inspirational persons in Indian history. I am ready to sacrifice my life for preserving the unity of this country," Banerjee said.
"I love my brothers and sisters of the Hills. I am happy to be in Darjeeling to celebrate the birthday of the great son of India," said the chief minister, who was here on January 23 last year too.
She announced Rs one lakh assistance each to 10 poor persons of Sherpa and Rs five crore to the Sherpa Cultural Board for the development of the community.
Senior Gorkha Janmukti Morcha (GJM) leaders like Roshan Giri, Ramesh Alley and Harka Bahadur Chhetri were present at the programme.