Refusing to toe the government's stand that he required security, Mahatma Gandhi had told authorities that he would leave Delhi if protection was insisted upon, Kalyanam, who was secretary to the father of the nation, said.
Although there were warnings to Mahatma Gandhi from the government-- several weeks ahead of his assassination-- that he faced threat to his life, he told the authorities that he does not want security.
"Had Gandhiji agreed to have security, people might have been frisked and his assassination could have been averted," Mr Kalyanam told news agency PTI.
Mr Kalyanam joined Mahatma Gandhi in 1943 and served him till his death, when he was assassinated on January 30, 1948.
January 30 is observed as Martyr's Day.
Election Results for Lok Sabha Election 2019 will be out on May 23. Get the latest election news and live updates on ndtv.com/elections. Catch all the action on NDTV Live. Like us on Facebook or follow us on Twitter and Instagram for news updates from each of the 543 parliamentary seats for the election 2019