<prompt> Translate the following text to EnglishUtafiti huo ulifanywa kwa mujibu wa viwango vilivyowekwa na Baraza la Rais juu ya Uadilifu na Ufanisi PCIE kama ilivyoendelezwa kwa kazi ya GAO.  <response>: investigations according to standards established by the Presidents Council on Integrity and Efficiency PCIE as adapted for GAOs work. 