A, what is the task of criminal investigation
Criminal investigation refers to the sum of the various methods of studying the crime and apprehending criminals. Criminal investigators seek to identify the methods used by criminals, the motives for the crime, and the identity of the criminals themselves, as well as to identify victims, and may also have to locate and interview witnesses. However, it is the professional investigator who pays primary attention to the professional criminal. 1, in the search for criminals who did not leave fingerprints or other corroborating evidence, progress can often be made by analyzing their usual methods; career criminals seem to be accustomed to using some kind of trickery (such as breaking and entering) in order to seek a certain type of loot, and to leave some kind of mark. 2. In criminal proceedings in China, investigation is regarded as a fairly important stage of the proceedings. China's Criminal Procedure Law, Article 82 (1) states: "investigation" refers to the public security organs, the People's Procuratorate in the process of handling the case, in accordance with the law to carry out specialized investigations and related coercive measures. 3, investigation and prosecution, trial closely linked. For public prosecution cases, investigation is the basis and premise of the prosecution and trial, the degree of completion of the investigation task greatly affects the quality of the prosecution and trial. In judicial practice, the investigation findings for the trial organs recognized the possibility of a large. In our country, the act of investigation includes both the specialized investigation activities carried out by investigators in accordance with the law, and the compulsory measures taken to prevent the perpetrators and suspects from continuing to commit crimes, escaping, destroying evidence or committing suicide. According to the provisions of the criminal procedure law, China's system of investigative behavior, should include the following: questioning suspects, questioning witnesses, victims, investigation, inspection, search, seizure of physical evidence, documentary evidence, identification, wanted, detention, bail, residence under surveillance, detention, arrest and so on.Two, how to deal with the end of criminal investigation
The investigation is the investigation of the investigative organs through the investigation, that the facts of the case has been clarified, the evidence is sufficient to determine whether the suspect is a crime and should be held criminally liable and decided to end the investigation, the case according to law, or the handling of the case of a litigation activity. After the end of the investigation, the need for arrest, should be immediately released; for the need to continue, and meet, the conditions of residence under surveillance, according to the law, bail pending trial or residence under surveillance to the Supreme People's Procuratorate direct investigation of cases, in line with the Criminal Procedure Law, Article 124, Article 126, Article 127 of the conditions provided for the need to extend the period of investigation of suspects by the Supreme People's Procuratorate to decide in accordance with the law. Where a people's procuratorate is unable to conclude its investigation within the statutory period for investigative detention, it shall release the suspect or change the compulsory measures in accordance with the law. The people's procuratorate investigation concluded cases, shall make the decision to bring a public prosecution, not or withdraw the case. Comprehensive above, I organize the relevant content about criminal investigation. It can be seen that the general criminal investigation will take a variety of investigative measures, and then collect evidence related to the case. The criminal investigation also has a certain period of time, after the end of the investigation will be based on the results of the investigation to make the appropriate treatment.