Pudukottai: A 52-year-old physical education teacher was arrested on Saturday on charges of sexually harassing a 15-year-old govt school student in Pudukottai district.The accused is Amos Devasahayam of Ganesh Nagar in Pudukottai.Police said Devasahayam accompanied students to a sports competition held at a private school in Feb. After the event, he drove the students back in his car. During the journey, he sexually harassed a student seated in the front seat, police said. The student told her parents about the incident only recently.Based on a complaint lodged by the district child protection officer, Pudukottai all woman police registered a case under provisions of the Protection of Children from Sexual Offences Act and arrested Devasahayam. He was remanded in judicial custody.