Automated systems of support and decision making (ASDS), using knowledge bases, containing expert opinions of leading specialists in a certain type of expertise, can render great assistance in decision-making. Such intellectualized systems can be effective, in particular, in the work of a criminal investigator and conduct forensic examinations. A criminal expert is obliged not only to report his conclusion, he must justify it and at the same time, so that the investigator or the court could understand and assess whether this conclusion is correct. In order to address issues related to the improvement of forensic analysis, it is necessary to have, above all, appropriate information support. The following paper offered a number of specialized applied problems in the field of technical diagnostics, the received results can be used for intellectual support of a substantiation and decision-making also concerning questions of investigation of separate kinds of crimes or carrying out of other kinds of forensic analyses.