Her ashes was immersed by daughter Munmum Sen and grand daughter Riya Sen in Ganga river at Assi Ghat here.
Sen, who captured the public's imagination with her memorable films like 'Agnipariksha', 'Devdas' and 'Saat Paake Bandha'.
The doe-eyed beauty turned a recluse after bidding adieu to the world of films in the late seventies and was often compared to Hollywood icon Greta Garbo, who also shunned public contact afte leaving showbiz.
Sen died on January 17 following cardiac arrest. The 82-year-old actress had been ill for sometime.