Discuss the status and role of investigators in crime scenes and how to improve the level of investi

Criminal investigation work generally involves the basic process of on-site investigation, searching for clues, obtaining traces and physical evidence, analyzing the facts of the case, determining the direction of investigation, delineating the scope of investigation, investigating and studying, verifying the truth and exposing criminals, interrogating criminals, and further expanding the results of the war. In the course of investigation, it is necessary to adopt the general method of visiting the masses and conducting investigation and study, and also to use follow-up, waiting, special information, and other secret means.

Criminal investigation work should not only use the logical reasoning method of analysis and judgment, but also make use of various specialized techniques such as trace examination, physical evidence analysis, and forensic laboratory examination. However, no matter what kind of process we go through, no matter what method we use, what means we use, and what technology we use, we must always adhere to the basic method of concrete analysis of specific problems.

Of course, you can find that there are differences in all of them, except that identical twins have almost identical DNA.

Based on the on-site analysis, judge the nature of the case, the number of perpetrators, their characteristics and portraits, the methods and characteristics of the crime, the course of the crime, the extraction of traces and physical evidence, and so on.

Criminal investigation is an applied science that studies the laws and characteristics of criminal activities carried out by criminals, and studies the strategies and methods for exposing, preventing and confirming crimes.

Criminal investigation work refers to all the investigation and investigation activities carried out by the criminal investigation department against the specific object of criminal offense. Investigation and solving cases, including case filing, on-site investigation, deployment of investigation plans, implementation of investigation activities, "Application of various measures, strategies, and means", collection of criminals, investigation and questioning, application of criminal technology, and a series of activities directly carried out for investigation and solving cases.

The relationship between criminal investigation work and criminal investigation is a unified dialectical relationship of practice, understanding, re-practice, and re-understanding. This is because criminal investigation work is experience and practice, and criminal investigation is a scientific knowledge system.

There is a rise in criminal investigation work to criminal investigation science, and it is necessary to go through experience to the abstraction of theory, and criminal investigation science has its own scientific theory to guide the practice of criminal investigation work.

1. Criminal investigation is at the forefront of the struggle against criminal offenses.

2. It is the starting point of the struggle against criminal offenses.

3. Directly affect the success or failure of the struggle against criminal offenses.

is in the dominant position, because the subsequent prosecution and trial are based on the results of the investigation. The success of the fight against crime depends on the quality of the investigation. (I'm the o(o) who learns to investigate.)

When the public security organs conclude their investigation of the case of Mashanchan, they shall ensure that the facts of the crime are clear, the evidence is credible and sufficient, and they shall write a written opinion for prosecution and transfer it to the people's procuratorate at the same level for review and decision, together with the case file materials and evidence; At the same time, inform the criminal suspect and his defense lawyer of the transfer of the case. Article 162 of the Criminal Procedure Law of the People's Republic of China.

Article 115 of the Criminal Procedure Law: Public security organs shall conduct an investigation into a criminal case that has already been filed, and collect and collect evidence that the criminal suspect is guilty or innocent, and that the crime is minor or serious. Current offenders or major suspects may be detained in advance in accordance with law, and criminal suspects who meet the requirements for arrest shall be arrested in accordance with law.