The problem of realization of investigator's authority on reception of samples for comparative research

The article examines the problem of realizing the investigator's authority to obtain samples for comparative research in connection with the existence in the criminal procedure legislation of the Russian Federation of a gap in the regulation of the relevant legal relations. The Code of Criminal Procedure of the Russian Federation, fixing the right of the investigator to obtain samples for comparative research from persons directly related to the committed crime, does not oblige these persons to provide the samples necessary for the conduct of procedural actions. Since obtaining these samples for a comparative study may be essential to establish the relevant circumstances of the crime under investigation, including the involvement (non-involvement) of a particular person in committing it, it is necessary to assign to the above persons the duty to provide such samples.Keywords: investigator's authority, procedural action, samples for comparative research.