"Understanding these rules of evidence is far more important for prosecutors than for evidence gathering NGOs. Generally, NGOs should keep detailed records of information the prosecutor may find, and how and where the prosecutor may find it. However, NGOs should not usually record detailed witness testimony or remove physical evidence because NGO errors could stop prosecutors from being able to use a witness or evidence at trial. Instead, NGOs should focus on recording details of crimes into a database that the prosecutor can use to conduct an official investigation, and to help the prosecutor understand relevant local cultural issues..."