Thiruvananthapuram: Ayiroor police on Sunday arrested a youth for allegedly sexually abusing a 15-year-old Class X student in Varkala after luring her into a relationship.Police said the girl had alleged that Sujin S, 19, a native of Kodakulam in Elakamon, sexually abused her on multiple occasions.The accused had allegedly developed a relationship with the minor and gained her trust by promising to marry her, police said.The incident came to light after the girl’s parents noticed changes in her behaviour and physical condition. As she complained of physical discomfort, her family took her to a hospital for a medical check-up.During detailed medical examinations, doctors found that the girl was pregnant. The hospital authorities subsequently informed Ayiroor police, following which an investigation was launched.Police recorded the girl’s statement and initiated further proceedings. Based on her statement and other information collected during the investigation, the police took Sujin into custody.The police subsequently registered a case under relevant provisions of Protection of Children from Sexual Offences (POCSO) Act, along with BNS 65(1), and arrested him.Police said further statements and medical and other evidence are being collected as part of the investigation.The accused was later produced in court and remanded in judicial custody, police said.