Note that a billion dollar didn't go missing - they attempted to steal a billion dollar but only managed to get $81 million, out of which roughly a quarter has

Note that a billion dollar didn't go missing - they attempted to steal a billion dollar but only managed to get $81 million, out of which roughly a quarter has been recovered by Bangladesh. As the article points out, the cover-up started at the highest level, with the governor of the central bank himself not informing the government or law agencies as soon as the news reached him. He tried to hire some other security agencies to trace and retrieve the money, (probably hoping to salvage some of his reputation and following the old maxim that it is better to seek forgiveness than permission). He ofcourse had to resign the next day. I am sure the law went overboard while investigating a case of this maginitude with huge public pressure on them - it's pretty common in Asia for the police to even resort to torture.