Renowned Indian seer Mahant Narendra Giri was found dead under suspicious circumstances at his residence in Uttar Pradesh on Monday.
His body was found hanging inside the Sri Math Baghambari Gaddi monastery, police said, adding that further questioning is underway.
According to media reports, in a suicide note purportedly left by Giri, he blamed one of his disciples for his death.
Condoling the death of the seer on Twitter, Prime Minister Narendra Modi said Giri's death is "extremely sad."
"While devoting his life to spiritual traditions, he played a big role in bringing various movements of saints together. May God gives him a place at his feet,” the prime minister added.
Hindu monk and Uttar Pradesh State Chief Yogi Adityanath also called the demise of Giri an "irreparable loss to the spiritual world."