DR RAJESH Talwar, the father of 14-year-old girl, who was found murdered at her residence last week, with her throat slit, has been arrested by the Noida Police today, with regard to the double murder. Sources believe that Dr Talwar had an extra marital relationship with his colleague, Dr Anita Durrani, which Aarushi didn’t approve of. She had an argument with her father, just five to six days ago before her murder, when she confronted him about his illicit relationship.