It is imperative that the investigator obtain as much information as possible regarding the circumstances of the crime prior to entering the scene. Statements from witnesses and victims can broaden the scope of the investigation. The investigator develops an approach to the scene based on this information and the nature of the crime. At the scene of a burglary, attention will focus on the points of entry and exit.
When possible, to help determine what evidence may have been left behind by the suspect, ask the victims a series of questions:
Document what questions were asked of the victim and the reason for asking in order to justify evidence identification, collection and preservation. This supports the chain-of-custody requirement.