MADINA: Investigators in Madina Saturday started interrogating an Asian worker accused of sexually abusing a mentally disabled teenager inside the Boys Mental Education Institute, authorities said. The worker is claimed to have abused the 18-year-old student for over three months. The student identified the worker and the police arrested him. The case is being investigated by the Bureau of Investigation and Prosecution. The crime was revealed when the teenager repeatedly complained to his mother about being in pain.