Phases of investigation
The objectives of the investigator divide the investigation into three phases. They are not necessarily separated in time.
The first phase is to identify the criminal. Ordinarily the identity of the criminal is discovered in the following ways: eyewitness testimony, circumstantial evidence or confession.
The second phase is to locate and trace the criminal. A great part of investigate work is devoted to finding missing or wanted persons. The search for a person is frequently a simple matter of a few telephone calls or a visit to a house. At other times the hunt can become a lengthy and complicated ordeal. The investigating process very often depends on the discovery of physical evidence at the scene of crime. The search for persons commonly requires an application of various sources of information.
The third phase is the following one: the facts proving the guilt of the criminal are gathered for court presentation. Often it is the most difficult stage. It requires the fact of the crime to be established, the defendant to be identified, the physical evidence to be shown and connected with the case. Also competent and credible witnesses must be available. So, the whole criminal case must be presented in an orderly and logical fashion.
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