ABSTRACT
Investigation is the police activity concerned with (1) the apprehension of criminals by the gathering of evidence leading to their arrest and (2) the collection and presentation of evidence and testimony for the purpose of obtaining convictions. Investigations are normally divided into two major areas of activity: (1) the preliminary investigation normally carried out by officers in the uniform patrol division and (2) the follow-up investigation normally carried out by officers formally trained in investigative techniques, o¯en part of a detective bureau (ibault et al., 1998).
