Delhi Police has seized accusses’s mobile phones, laptop and other electronic gadgets. New Delhi: Twenty-year-old Arjun Tanwar, arrested for killing his parents and sister at their south Delhi residence, had searched online about methods of murder before committing the crime, police sources said on Thursday. Delhi Police has recovered blood-stained clothes and an army knife allegedly used in the crime, and also seized Tanwar’s mobile phones, laptop and other electronic gadgets, they said. The sources said that police are also contemplating to conduct a psycho-analysis test on Tanwar to determine his mental well-being. Ex-armyman Rajesh Kumar (51), his wife Komal (46) and their daughter Kavita (23) were found murdered at their house in Deoli village on Wednesday morning. According to police, Tanwar did not have good relations with his parents and was upset that they liked his sister more than him. On Thursday, he was produced before a city court from where he was sent to a three-day police custody. The police said in the court that they have to interrogate him thoroughly and confront …