After meeting Modi in Berlin, Bose's grandnephew had claimed that he got an assurance that his demand for declassification of all secret files related to the freedom fighter would be looked into.
In Kolkata, the family members of Bose hit the city streets demanding declassification of files on the freedom fighter.
According to archival material, which set off a political controversy, Bose's close relatives, including his two nephews, Sisir Kumar Bose and Amiya Nath Bose, sons of his brother Sarat Chandra Bose, were spied upon for 20 years between 1948 and 1968. Nehru was Prime Minister for 16 of these 20 years.
The files, now with the National Archives, said the Bose family homes at 1, Woodburn Park and 38/2 Elgin Road, were kept under surveillance.
The IB sleuths intercepted and copied letters written by the Bose family and even trailed them on foreign tours.
Bose's family reacted to reports with "shock" and said it was a "poor reflection" on the quality of democracy at that time.
Bose had quit Congress before independence over differences with Nehru and Mahatma Gandhi and launched an organised military resistance against the British after raising the Indian National Army.