Judicial Magistrate Maruthupandian found the nine guilty and sentenced them to one month imprisonment, besides slapping a fine of Rs 2000 each.
They obtained bail, saying they were going on appeal.
According to the charge sheet, the nine assaulted Parameswara who made a written request during a meeting to invite the Kanchi seer for the consecration of Pandi Nayaka Subramaniar temple.
There was an altercation and he was assaulted, it said.