The minor girl yesterday lodged a complaint with the Mahila police station alleging that the coach had been mentally and sexually assaulting her for past several days.
The police then registered a case under several sections of IPC and Protection of Children from Sexual Offences (POCSO) Act.
"During preliminary enquiries it was revealed that there are prima facie evidences against the accused and the coach was arrested," said Mahila police station inspector Sakuntala Pati.
Police yesterday said the coach denied that he had sexually assaulted her but admitted to slapping the athlete twice as an act of reprimand for certain wrong doings by her.