Kolkata, Oct 28 (UNI) The mother of Prahlad Das, the prime accused in the rape and murder of a 17-year-old girl in Gaighata located in West Bengal's North 24-Parganas, has questioned the police account of his death in an encounter and demanded compensation, even as forensic experts visited the spot to collect evidence on Wednesday. Rekha Das questioned how her son could have snatched a police firearm and opened fire when, according to her, his hands were tied while he was taken home late on Monday night for a reconstruction of the crime. "He was brought home around 2 am…