Methodology of interrogating a suspect in light of the Mèndez principles

Aneta Łyżwa

Uniwersytet Warmińsko-Mazurski w Olsztynie UWM
https://orcid.org/0000-0003-3285-7714


Abstract

The subject of interest on the basis of this article, the author coverage of the issue of the methodology of interrogation of a suspect, as one of the key evidentiary activities in the criminal process. The choice of the topic was determined by the fact that this activity remained and still remains in the orbit of interest of the state bodies responsible for protecting its internal and external security. Indeed, a personal source of evidence, such as a suspect, properly used, is one of the key sources for obtaining the necessary information. However, the recognition of the results of such an interrogation as evidence in a criminal trial requires the preservation of certain legal guarantees on the part of the investigating authorities, ensuring the freedom of the interrogated person from all forms of coercion, as unauthorized means of obtaining information. An important development that made a significant contribution to the discussion of the principles of interrogation of a suspect was the preparation by the UN Special Rapporteur on Torture Juan E. Méndez’s document entitled Principles of Effective Interrogation for Pre-Trial Investigations and Information Gathering. This study has become an important point of reference for the international community to assess whether the regulations in force in national legal orders provide adequate protection of the rights of interrogated persons, especially suspects, and at the same time enable the effective realization of the goals of interrogation. The circumstances in question inspired the author to make a closer legal analysis of these regulations and thus set the goal of this study. Thus, the purpose of the article is an attempt to evaluate the rules for interrogating a suspect proposed by Juan E. Méndez, made from the perspective of the solutions in force in the Polish criminal procedure. In doing so, the author relied on the methods inherent in legal sciences, primarily the formal-dogmatic method. As a final result, it became possible to identify the areas in need of amendment and to propose appropriate factual and legal solutions.


Keywords:

law, procedural guarantees, pre-trial proceedings, interrogation methodology, evidence, coercion


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Published
2025-09-26

Cited by

Łyżwa, A. (2025). Methodology of interrogating a suspect in light of the Mèndez principles. Studia Prawnoustrojowe, (69). https://doi.org/10.31648/sp.11437

Aneta Łyżwa 
Uniwersytet Warmińsko-Mazurski w Olsztynie UWM
https://orcid.org/0000-0003-3285-7714