Handslaps and Fisticuff: A PYP Mini [M][T] - Page 91

Once during each night phase, you may PM the host to select one player by sending ##Arrest: Player Name. You will be PM'd the following day phase what the player's Role name is (e.g. Detective or Jailkeeper). If you are investigated by the Detective, that investigation will return as Town-aligned regardless of your actual alignment. If you are roleblocked by the Roleblocker, JoAT (Roleblocker) or Jailkeeper on the same night you are investigated, then the investigation by the Detective will return your actual alignment.