THE INTERACTION OF THE INVESTIGATOR AND OPERATIVE OFFICER AT CRIMINAL PROCEDURAL ARREST IN THE SOCIALIST REPUBLIC OF VIETNAM Vyong Thang Long, adjunct. <...> E-mail: vtl85@yandex.ru Annotation The purpose of the study presented in this article address the role of operational units in the conduct of detention. <...> The analysis of problems of interaction of the investigator with the staff of operational units, as well as the legal basis for this engagement. <...> The problem of interaction of participants of detention during the investigation of the crime should be considered not only from the point of view of the criminal process, but also from the point of view of criminalistic tactics, because, the issues of interaction between participants of detention have a pronounced tactical aspect. <...> Such as: choosing the optimal organizational form of joint management of the distribution of the functional tasks of the participants of detention, the variety in ways to coordinate their joint efforts, exchange of information. <...> The main conclusion of the study is to identify the main ways of interaction of the investigator with the staff of the operational units of the Socialist Republic of Viet Nam to the arrest of a suspect or accused, and the need for improvement of the criminal procedural legislation regulating this interaction. <...> Based on the analysis of law enforcement practice of the investigative bodies of the Ministry of public security of Vietnam are given suggestions for improvement of the criminal procedure law of the Socialist Republic of Vietnam and recommendations for improving the efficiency of interaction of the investigator with the operational staff at detention of the criminal. <...> It is noted that for effective successful arrest, the investigator should assist with operational staff, to make fuller use of their ability in gathering the necessary information; it is necessary to involve all participants in detention in the planning, and to provide them with the opportunity to offer their opinions on the tactics of detention. <...> Testing of these areas will significantly increase the initial amount of information, to improve the efficiency of interaction and effectiveness of the detention and to provide the necessary search effect. <...> The study is applicable for implementation in the theoretical and practical aspects of the criminal procedure law of the Socialist Republic of Vietnam. <...> GТпШ ЭrыЧС Эổ МСứМ đТềЮ ЭrК СыЧС sự, HọМ ЯТệЧ CảЧС sпЭ ЧСсЧ НсЧ, NБB CAND, Hр NộТ, 2010; 2. <...> GТпШ ЭrыЧС Эổ МСứМ đТềЮ ЭrК СыЧС sự, HọМ ЯТệЧ <...>