Members of an unknown gang allegedly murdered a 17-year-old youth here and threw the severed head inside a police station.
The CCTV footage of the incident shows two bikers stop at the entrance, throw the severed head of the boy and drive off into the night.
The rest of the body was recovered by police from a nearby lake in Bahoor village. The boy has been identified as Swethan, who was recently out on bail in a criminal case.
Police of both the neighbouring Cuddalore district of Tamil Nadu and Puducherry are probing the incident.
Post mortem of the body will be done in the Puducherry government hospital.
Police have registered a case and are investigating the gory crime.