"I made a vow to tonsure my head and I am fulfilling it now as per my prayer to the Almighty for the acquittal of Jayalalithaa in the case," he told reporters after tonsuring his head.
A number of volunteers of the party also tonsured their heads soon after the verdict was pronounced.
Om Sakthi Segar is representing the Nellithope constituency in Puducherry Assembly.