Review

The procedural activity of the investigator has undergone significant transformations in its content and scope, which has changed the traditional view of the procedural activity of the authorized entity since current Criminal Procedural Code of Ukraine enured. Currently, the relevant issue – is legal regulation of the activities of pre-trial investigation participants, in particular the activities of the investigator and his interaction with other unauthorized participants of the criminal process in general. Therefore, neither practice nor scientific research in criminal procedural law has not solved the problem during the period of the 1960' Code of Criminal Procedure.

The purpose of the article – to determine features of co-relation between the activities of the investigator and the activities of unauthorized participants in pre-trial investigation which are based on systematic analysis of the criminal procedural legislation of Ukraine, scientific sources, and materials of practice.

It is noted that the procedural activity of the investigator became more controlled by unauthorized participants in the investigation and by the authorized representatives of its participants. The list of procedural actions and decisions of the investigator, which he must coordinate with the prosecutor and investigating judge, which can be appealed by the interested parties of the proceeding, is expanded.

 It is concluded that the investigator can operate autonomously or in co-operation with unauthorized participants in pre-trial investigation while transforming criminal procedure legislation.

Entertain the notion of unauthorized participants exercise their rights, obligations and prohibitions only in co-relation with the investigator, as a rule. The author concludes that the investigator's activity consists in the accumulation of the results of the proceedings of all other participants of the investigation, including those who operate departmental control, prosecutorial supervision and procedural guidance, judicial control.

Key words: investigator, criminal procedural activity, pre-trial investigation, participants of pre-trial investigation.