The objectives of the investigation includes support necessary contact with an expert in the examination. For this investigator provides a collection of additional materials, put on solving expertise additional issues, arrange the presence of the accused and other persons during the examination, draws relevant statements and explanations of the accused, met with the new facts established expert and inform experts about revealed their new data relevant to the investigation, conducting investigations, the need for which arose during the examination.
This allows the investigator before the end of the examination of the information used to produce new evidence of planning further investigation and eventually qualified for the expert evaluation.
Especially close contact investigator should maintain an expert that examines not a forensic expert institution, as this expert has special training and it may be that he does not clearly understand the objectives of the study and the limits of their competence.
Expert permit authority that appointed the expert shall be entitled to familiarize with the case “relating to the subject of examination.” Moreover, in the interests of the investigation to the investigator must seek himself as an expert review of the case and allows him to correctly answer more detailed questions. Lack of completeness of expert opinion is often a consequence of the fact that the expert was not sufficiently familiar with the case.
However, it should be borne in mind that an expert review of the file, usually does not give positive results, but rather, can lead to bias expert because the expert will draw your own conclusion not given to him for Materials Research and not from their expertise and with the impression prevailing in reading the case.
If the examination of the expert establish the circumstances relevant to the case, with regard he had not been put to question, he is entitled to specify them in its conclusion
For example, if the expert handwriting analysis expert found traces of digestion document, it must notify the investigator. This will enable the investigator to properly prepare and appoint additional expertise. In addition, the expert revealed new facts can be used by investigators during the investigation.
In conducting the examination, sometimes participating investigator, with his permission may be present accused (especially economical expertise).
During the expert study may also need the participation of the accused during the examination. In addressing this question, should consider the kind of expertise. For example is not appropriate involvement of the accused to participate in the forensic examination, because in these cases the explanation of the accused can not play any role (eg, inserting artist sheet by handwriting identification weapons).
On the contrary, the accused involved in merchandising, forensic accounting or technical expertise is entirely appropriate.
Investigation recommended time to inform experts about new circumstances that became known during the investigation and relating to the matters investigated; On the other hand, the expert investigator shall report on new facts became known to him during the investigation.
Maintaining regular contact with an expert in the study, the investigator should not impose on it a version of which it considers the most likely.
If the examination is conducted outside expert institution, the investigator expert creates the necessary conditions for work protection, providing technical means room.
Thus, on this issue must be concluded that the importance to give full and impartial expert opinion has proper information support of experts from the initiator expert study. This involves making available expert not only those of the case that are collected in preparation for an examination or earlier, but the extent of the examination. To submit materials such initiator examination procedure may need to proceedings and not as its own initiative and with expert suggestions.