civil forensic

Chapter 348 Command
"Human traffickers have always been mostly repeat offenders." Gao Changjiang answered Jiang Yuan's words with a frown, and said, "We have also screened all the human traffickers who have been released from prison recently. There are more than a dozen policemen doing this. Currently It wasn't found either."

Jiang Yuan straightened his back, wanting to continue talking.

Gao Changjiang felt that Jiang Yuan did not know enough about the case, so he pretended not to have seen it, and continued: "From the current scene, there are indeed very few traces left by the murderer. It is precisely because of this that we have asked the ministries and commissions and invited experts to Come to help..."

Several experts present looked at the files, but did not speak immediately.

Gao Changjiang heaved a sigh of relief, and said: "Although there are few traces, the support given to us by our superiors is extremely high. As long as there is a little clue, we can track it down..."

"Gao Ju, we have screened out as many valuable clues as possible since yesterday. Up to now, it has been difficult to screen out reasonable clues." The expert sitting opposite Jiang Yuan gave Gao Changjiang the top went back.

Cases vary greatly from case to case. In some cases, the perpetrators don’t know how to do things and don’t pay attention. Clues are all over the place. The main job of the criminal police or experts is to find the easiest clue and bring the person back by the way. , can complete the chain of evidence.

But in some cases, the perpetrators really pay attention, and if there is a little coincidence or luck, there will be very few clues left.

In this case, it is very important to choose the investigation direction. Some investigation directions can catch people at the time, and some investigation directions are missed, and it is useless to find them later.

In the case of missing children, when encountering the second situation, it is very difficult.

Assuming that one or more criminals take the children away in a relatively secretive way in an unmonitored place, as long as they are not stopped during this period, they will hardly leave any traces.

Especially in a place like the vegetable market, where people come and go, traces such as footprints or fingerprints can only be described as messy.Gao Changjiang wanted to use crowd tactics before, just to try to screen out criminals from the vast number of fingerprints.

His idea is actually good, but now people do fingerprint comparison, in fact, it is not so fast, maybe it will be better with the application of AI technology in the future, but for now, it is still impossible to process hundreds of thousands of fingerprints of.

The most likely and most appropriate way is to monitor the comings and goings. The problem is that now even the actual comings and goings of the criminals cannot be found.

The police have the clearest and most reliable clues, which is when and where the child was lost. Apart from this, there are almost no definite inquiries.

You don't need a bunch of uncertainties to infer a certainty, that's too difficult.

"I know that the case is very difficult, but we can't just wait like this." Gao Changjiang persuaded everyone with unsophisticated methods, and said, "I suggest that we cooperate with Professor Liu to do a crime scene reconstruction, and at the same time do a thorough investigation of the case." A new combing, looking for other clues..."

Professor Liu, who was named, frowned, but he did not object.

The other experts also had similar expressions.

With the advancement of technology, there is less and less certainty.Making the possible out of the impossible is the daily routine of every expert present.If this is not the case, how can it be possible to be listed on the list of ministries and commissions.

Although the difficulty still exists, everyone does have the confidence to make a breakthrough.

Jiang Yuan had no choice but to follow the crowd to the Ermaxiang vegetable market where the incident happened. "

Gao Changjiang has actually blocked the vegetable market.

Therefore, he said that the search will start tomorrow morning, and the substantive work has already been done ahead.

Expert Liu walked around the vegetable market twice to see the scene.

Jiang Yuan followed suit.

Crime scene reconstruction is a must for every student majoring in criminal science. As for whether they can learn it well or not, there is no need to worry so much.For the same skills, just refer to high numbers and discrete functions.

Expert Liu took a notebook and a pen, and drew while watching.Occasionally say a few words, and the assistant next to him will make shorthand.

Jiang Yuan has the ability to analyze bloodstains, and also has a little bit of ability to reconstruct crime scenes, but seeing this kind of scene that is not popular, it is at the level of LV1.5.

The crime scene investigation of LV4, which Jiang Yuan had mastered in the early stage, can still play a good role in such an environment.

Theoretically, if he could find the scene where the last child disappeared, Jiang Yuan would at least have the ability to isolate most of the DNA from the scene, which would most likely include the traffickers.

However, alignment remains a big problem.Considering that a large number of fingerprints on the scene have already been compared, it is not so meaningful to swipe the DNA again.If the perpetrator wore gloves and the like, the chances of leaving DNA are not high.

boom!
Another ultra-bright dysprosium lamp was switched on. This kind of lighting equipment often used on construction sites can illuminate an area of ​​1000 square meters when hung at a high place. Hanging multiple lamps in succession makes the brightness in the vegetable farm no less than during the day.

This helps in finding fingerprints and small physical evidence, if any.

"How is it?" Gao Changjiang also hadn't slept for 30 hours, and his sleepy eyes were fighting.

Expert Liu shook his head: "When the perpetrator took the child away, he didn't act too violently. It was probably abduction or something. Most likely it followed the direction of the flow of people. Among the doors here, I think the one on the west side It's more likely..."

Gao Changjiang was quite disappointed to hear that.If it's only to this level, he can say a lot, of course, that is to say more casually.

"We can't wait for the criminal to commit the crime!" Gao Changjiang cursed angrily.

In many cases, in the end, this is actually the case.Because the murderer could not be found in the previous case, we can only wait and see the later case.

If the culprit stops for some reason, the case is basically over.

"Let's look for the old case from before." Jiang Yuan visited the vegetable market, which is the most important scene, but he was more certain of his thinking.

Gao Changjiang had no other choice, so he could only turn his head to Jiang Yuan and say, "We haven't found a suitable old case yet."

"It doesn't have to be in this province. He needs practice to reach his current level of maturity. There is also a way to sell it. If there is no way to sell it, there is no need to abduct 4 children at once." Jiang Yuan has done this now With more cases, the level of criminals has become more and more understood.

Gao Changjiang pondered for a while, and said: "Then what means are used to find these old cases?"

It's not that he couldn't hear Jiang Yuan's suggestion, but Jiang Yuan's suggestion obviously deviated from his detection range.

Jiang Yuan is actually not sure, but after solving so many cases, his self-confidence has long been raised, and he said naturally: "Sort out these cases first, and then look for similarities."

The workload of this job is naturally not small, but Gao Changjiang has no shortage of people now.

He just said with some regret: "I originally hoped to use technical means to quickly solve this case."

"The process of sorting out the case will definitely use everyone's technology." What does Jiang Yuan say? Anyway, he is in a strange city in the next province. He neither works under Gao Changjiang's hands nor sells it to Gao Changjiang. He has confidence All eight points.

Gao Changjiang looked at the other experts, and seeing that they had no opinion, he simply nodded and said, "Then go back and sort out the case, what do you need?"

"Find some experienced policemen and find out all the disappearance and abduction cases in this province and surrounding areas in the past two years." Jiang Yuan felt like he had taken over the investigation.

This is also a bit of a habit. When he was in Ning County, he had a high status. After he was sold to Changyang City, he had a separate special class for accumulated cases to do things, and he basically formed the habit of commanding and ordering.

In contrast, although other experts have been famous for a long time, because of their single technology and the technical advantages accumulated over the years, they prefer to do technical support instead of directing investigations.

Gao Changjiang hesitated for a moment, but did as Jiang Yuan said.Originally, it was the investigation plan that had just been determined, plus the title of an expert sent by the ministry - even though he was the director of the city bureau, Gao Changjiang had actually not done a few cases listed by the ministry.

As a result, everyone turned back and deployed manpower at the same time to start screening cases at night.

The 8 people brought by Jiang Yuan were more familiar with this model, and then began to help each other, as if forming a group, the kind directed by Jiang Yuan.

(End of this chapter)