Arulanandham was the Pollachi Students Wing Secretary and was arrested with two other accused — T Herine Paul (29) and P Babu (27).

They were produced in Coimbatore Medical College and Hospital for a medical examination and were being taken for remand in Coimbatore.

The CBI — which took up the investigation in the case in March 2019 — was recently granted permission by the Mahila Court in Coimbatore to examine the voice samples of the five accused persons, who were already arrested.