Name of the PhD thesis: Special investigation in the investigation of unknown perpetrators muder cases of the Criminal Police .

Major: Criminology and Crime Prevention

Code: 62.38.01.05

Name of candidate: Ta Xuan Tung - Course: 20^th Course

Scientific titles, degrees and names of the supervisors:

1. Professor, PhD Nguyen Van Nhat

2. PhD Bui Ngoc Luy

Training center: The People’s Police Academy

New contributions of the thesis:

1. In terms of theoretical meaning: The thesis develops theories of investigating muder cases with unknown the perpetrators and theories of special investigation in the investigation of unknown perpetrators muder cases the Criminal Police. Remarkably, on the basis of theoretical and practical research, the thesis has developed the theories of organizing and conducting and making the prosecuted investigation in the investigation of the muder cases with unknown perpetrators through three stages: Determination, implementation and completion of the case.

2. In terms of practical meaning: The thesis has clarified the situation and characteristics relating to the prosecuted investigation in special investigation in the investigation of muder cases unknown the perpetrators of the Criminal Police; the status of organizing and conducting the investigation of unknown perpetrators muder cases from 2008 to 2017. On the basis of the results of the survey, the thesis has provided general comments and assessments on the advantages, limitations and causes of restrictions for overcoming.

3. The thesis has predicted the factors influencing the special investigation in the investigation of unknown perpetrators muder cases, as well as proposed practical solutions to improve the effectiveness of special investigation in the investigation of unknown perpetrators muder cases of the Criminal Police in the coming time.

The results of this dissertation have scientific value which can be used in the research process, teaching, textbooks compiling and reference materials in People Police universities.