Now high-tech means emerge one after another. What are the unsolved major cases?

Speaking of cold cases, it is inevitable in any case. On June199665438+1October 10, Diao Aiqing, a student of Adult Education College in Nanjing University Town, disappeared. Nine days later, when cleaning up the garbage, the sanitation workers found a piece of meat suspected of human tissue in the black plastic bag of the trash can, so they chose to call the police. The police arrived at the scene to investigate and found that it was really human fragments, just the poles of the body.

This is obviously a murder case. Soon, other body fragments were found in other parts of Nanjing. These human tissues are cut off one by one, and each piece is very uniform and tidy. And these pieces are cooked, adding up to more than 2000 pieces, and the internal organs are neatly arranged. The murderer was very cruel, so to speak, cruel to the extent of psychopathy. Finally, it was determined that the deceased was Diao Aiqing who had been missing for nine days.

The police immediately investigated the case, starting with the whereabouts of Diao Ai Qing on the day he disappeared. According to her classmates' memories, Diao Aiqing went out alone in casual clothes in the afternoon, and there was no class that day. She went to Qingdao Road alone and then disappeared into the crowd. No one has seen her since then, until her body was discarded nine days later, when she was already dead.

After a lot of investigation and collecting witnesses and clues, the police found nothing. Diao's disappearance was only on Qingdao Road, and no one knew where she went later. After a large number of investigations and interviews, the clues are very limited, which is far from helping to solve the case, and the various scenes where the victims were dumped did not find much useful evidence. The case was once deadlocked.

Clean up all the evidence, leaving nothing useful, fingerprints and DNA. Although there was no DNA testing technology in Nanjing at that time, there was also DNA testing technology in Shanghai at that time, but there was no trace left by the murderer at the scene of dumping the body. At that time, there were no cameras everywhere, and there were basically no cameras on the road at that time, so it was impossible to determine Diao Aiqing's activity track.

In this way, the case was frozen. Of course, the police have not given up the investigation, and they have been working hard to investigate. The only thing that can be determined is that the murderer has a very strong anti-detection ability, a very high psychological quality and an extremely cruel personality. There is also this person's meticulous and calm mentality and abnormal condition. The knife work at hand is very good. It can be seen from the above that the fragments are all the same size, and this person has obsessive-compulsive disorder, and the body fragments are neatly arranged.

Apart from the above, there is basically not much useful news. It wasn't until 12 that the internet became popular, and some analysis of the Nanda dismembered body case suddenly appeared on the internet, and this case returned to everyone's sight again. There are several mysterious bloggers in Weibo who have analyzed and inferred the case of dismembered bodies in Nanda, and inferred the motive and technique of the murderer, which has attracted many people's attention. Some people even speculated that these bloggers might be murderers, but in the end they all proved that they were not.

Nevertheless, the police did not give up. 20 16, the case was filed online again. Because the retrospective period of ordinary criminal cases is generally 20 years, many people think that this case is like this. The police gave a clear explanation that the case will not be abandoned and will continue to use the latest detection means until the murderer is brought to justice. Up to now, the case is still under investigation.

The netizen's analysis of this case is that the murderer is an expert at playing with knives, which is not something that ordinary people can do. The killer's knife skill is very good. From the knife method, many people analyze that the murderer may study medicine or study medicine, which is very similar to the scalpel method. Others think that the murderer may be a chef, because a chef can do it with a good knife. The third theory is that the murderer may be a butcher.

There is also the murderer's good psychological quality, strong anti-detection ability and good psychological quality, which shows that he studied medicine with the butcher. Strong anti-detection ability shows that his IQ is relatively high. So from this analysis, many people think that the murderer is more likely to study medicine. In addition, the deceased himself is a college student and belongs to a highly educated group. Butchers are generally ordinary people with low academic qualifications. It is difficult for people with high academic qualifications to have too much contact with people with low academic qualifications, and it is speculated that the deceased may know the murderer. A female college student should associate with someone who is young, highly educated or excellent at work, so the murderer is suspected of studying medicine. It's just that this case is still very troublesome. After such a long time, it is very difficult to solve the case.