Kolkata, Sep 19 (IANS): Congress leader Mani Shankar Aiyar on Friday said the central government was "more than welcome" to declassify the files it has on Netaji Subhas Chandra Bose.

"The BJP is more than welcome to declassify the files," Aiyar told the media here on the sidelines of a programme here.

Giving impetus to the decalcification campaigns as well as fuelling the debate on the disappearance of Netaji, 64 classified documents with the West Bengal government were made public on Friday.

Aiyar, however, declined to comment on reports that Netaji's family members were spied upon by successive Congress governments till 1968.

"I have not seen those files. I don't know what is there in them. So I can't comment on it."

Recently, declassified files of the union home ministry revealed that the family of Netaji was placed under intensive surveillance from 1948 to 1968 by the central government.

The country had three Congress prime ministers during these 20 years -- Jawaharlal Nehru, Lal Bahadur Shastri and Indira Gandhi.