CBI recovered a video of the Mahant, recorded before he killed himself, in which he alleged that Anand Giri was going to release an "edited video" showing him in an objectionable position.
The CBI has charged Giri, priest of Allahabad's Bade Hanuman Temple Addhya Tiwari and his son Sandeep Tiwari with criminal conspiracy and abetment to suicide.
Balbir Giri was named as the successor of Baghambari Mutt by deceased Mahant Narendra Giri in his will.
The team took the accused Anand Giri to his ashram where search was conducted for more than 7 hours resulting in the recovery of a laptop and documents.
During the probe, SIT had found the two-minute video clip in one of the two phones of the late seer in which he is heard saying exactly what was written in the note recovered from his room.
The three, including Bade Hanuman Temple priest Adya Prasad Tiwari and his son Sandeep, were remanded to the CBI custody by Chief Judicial Magistrate Harendra Nath.
Three wills made by late seer at different times surface; the third one mentions Balbir Giri as his successor.
Anand Giri along with Adya Tiwari, head priest of bade Hanumanji temple in Prayagraj, was sent in 14-day judicial custody at Naini jail of Prayagraj on Wednesday.
Narendra Giri was found dead under mysterious circumstances at his Baghambari Math located residence in Prayagraj on Monday along with a purported suicide note which named Anand Giri, and two others.
The unnatural death of Akhil Bharatiya Akhara Parishad head Mahant Narendra Giri is getting curiouser.
The arrest of his closest disciple Anand Giri, whom he has held responsible for pushing him to suicide, has led to speculations about the property over which they were engaged in a dispute.
The mystery over the alleged suicide of Mahant Narendra Giri deepened as in the note recovered from his room, he expressed the fear of getting maligned by his disciple Anand Giri.
CM Yogi Adityanath said that the incident would be investigated and the culprits would be adequately punished as per the law.
The seers' comments came a day after the BJP accused the Congress of preparing a 'toolkit' to target the Modi government over the second wave of the pandemic.
Modi tweeted that he spoke to Swami Avdheshanand Giri of Juna Akhara over telephone and enquired about the health of saints, many of whom have contracted the infection.