Any person alleged to have perpetrated an act of enforced disappearance in a particular State shall, when the facts disclosed by an official investigation so warrant, be brought before the competent civil authorities of that State for the purpose of prosecution and trial unless he has been extradited to another State wishing to exercise jurisdiction in accordance with the relevant international agreements in force. All States should take any lawful and appropriate action available to them to bring to justice all persons presumed responsible for an act of enforced disappearance, who are found to be within their jurisdiction or under their control.