Criminal investigators examine and process the scenes of crimes and the evidence found in them. They handle and protect the evidence compliant with rules and regulations, and isolate the scene from outside influence. They photograph the scene, ensure the maintenance of the evidence, and write reports.

Tasks

Tasks include -
(a) Establishing contacts and sources of information about crimes planned or committed, in order to prevent crimes or identify suspected offenders;
(b) Obtaining and verifying evidence by examining crime and accident scenes for clues and physical evidence, interviewing witnesses and suspects and analysing documents and computer files;
(c) Analysing evidence in order to solve crimes, identify criminal activity and gather information for court cases;
(d) Establishing contacts and sources of information not readily available or apparent concerning establishments or the circumstances and behaviour of persons, usually with the aim of preventing a crime;
(e) Making arrests;
(f) Testifying in courts of law or reporting to superiors about circumstances and results of investigations.