A police source told Hindustan Times, “The accused confessed to have demanded to have sex with her. When she said no, he got enraged and hit her on the head with a stool. But he keeps changing his statements. So sustained interrogation is going on to ascertain the motive behind the crime. We have enough scientific and other evidence to nail him for the crime. We are still collecting evidence. Also, we have several witnesses who can link him to the crime.”