The 34-year-old swami died at the same hospital where Ramdev was being treated until his discharge on Tuesday.
Swami Nigamananda had been on a fast since February 19 this year and was forcibly taken to a local hospital in Haridwar on April 27 when his condition worsened after days of fasting. He was later transferred to the Himalayan hospital in Jollygrant earlier this month after he went into a coma and subsequently died on Monday.
Swami Nigamananda's followers have asked for a CBI probe into his death alleging that he was poisoned.
Get Breaking news, live coverage, and Latest News from India and around the world on NDTV.com. Catch all the Live TV action on NDTV 24x7 and NDTV India. Like us on Facebook or follow us on Twitter and Instagram for latest news and live news updates.