Another manager of Kanchi Mutt, Sundaresan, and Jayendra Saraswathi's brother Raghu were charged as co-conspirators.
The first six among the accused were charged under IPC Sections 302 (murder), 120-B and 109 (abetment).
Of the 24 accused, Kathiravan was murdered in March this year at K K Nagar here.
Following the direction of the Puducherry Principal District and Sessions Judge,the Special Public Prosecutor had filed a petition stating there was no objection from prosecution and defence counsel for delivering the judgement.
Sankararaman's son Anand Sharma had also filed a memo that he had no objection for the delivery of the verdict and also gave up his earlier demand in August this year for audio and video recordings of proceedings of the case.
During the trial, 189 witnesses were examined between 2009 and 2012, of which 83 turned hostile.