On December 22, Arunmozhi alias Bharathiraja impersonated as a policeman and took the 19-year-old girl, who was with her boyfriend at Neelangarai beach, with him saying that he was taking her to a police station for enquiry, police said.
Instead of going to the police station, the man took her to a secluded place and allegedly tried to rape her, they said.
The motorcycle and mobile phone used by the man have been seized, they said.