The United States helped to investigate allegations and prepare corruption charges against a former Bank of Tanzania director of personnel and administration, Amatus Liyumba, according to leaked diplomatic cables. In the latest Dar es Salaam cables released by the whistle-blowing website, WikiLeaks, US deputy ambassador D. Purnell Delly revealed how a team of investigators from New York City’s Department of Investigation helped Tanzanian authorities to prepare the groundwork for the high profile prosecution two years ago.