Arushi.. who killed her

Who killed Arushi? thats the question which is haunting every Indian today. Whoever killed Arushi, i just hope its not her father or mother who is involved in it. If they even have knowledge of how it happened it'll be inhuman and another taint on human race... a carnivore will never ever kill its child even if its dieing of hunger! Whatever motive media or UP police is quoting are in my view too little for a father to get involved in killing of her own daughter and remain absolutely calm after that. Atleast i hope that Dr and Mrs Talwar have nothing to do with it as parent ward relationships will change across the country.