Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

Chapter 346 Special Work
Lu Chuan zoomed in on the details of the photo and compared the indentations on the corpse in the dossier photo.

"I asked yesterday. This kind of hook is not used by ordinary people. Basically, they are pipe repairmen."

"I think Liangzhou City can focus on this aspect and try again. For example, if there are any sewage river repairs near the place where the crime occurred, we can focus on checking."

Liu Guodong took the photos in the file and the photos of the steel hooks on Lu Chuan's cell phone. The more he looked at them, the more likely this was.

"Well, it looks quite similar to me. In this way, I will tell Captain Qin what you found. It depends on them in Liangzhou."

Whether a case can be solved cannot be determined by just one clue. A clue is only an opportunity and a breakthrough.

After all, the case has been going on for three years, and now only one criminal police officer who participated in the case is still watching.

And to effectively verify Lu Chuan's clue, it cannot be done in a day or two.

As for restarting the investigation of the case, it is even more impossible.

When Lu Chuan participated in the fingerprint battle organized by the Haizhou City Public Security Bureau and the provincial department, he solved all the backlog of murder cases.

After obtaining key evidence, the locality where the case is located will immediately initiate a homicide restart investigation mechanism. This restart process is quite troublesome, and requires a lot of writing in both procedures and reports.

It does not mean that a certain criminal investigation detachment or criminal police brigade can restart the homicide investigation mechanism if it wants to.

This is why the fingerprint battle organized by the municipal bureau and the provincial government is held at a relatively fixed time every year.

Another important reason is that the probability of cases occurring after the Spring Festival is relatively low. Over the years, the criminal investigation detachments of various municipal criminal police brigades have formed a habit, and the manpower during this period is relatively sufficient.

Restarting the homicide investigation requires not only clues, but also manpower.

Based on Liu Guodong's experience, although the clue discovered by Lu Chuan was important, it was not enough for Liangzhou City to restart the investigation of the murder three years ago.

Unless Team Qin's brother-in-law had discovered more after getting this clue.

Soon, Liu Guodong reported the relevant clues to Qin Yong and came back with a job.

"Xiao Lu, Captain Qin just told me that you should stop your work during this period."

Ok?
"Master, are you going on a business trip?"

"No, the main reason is that our detachment has accumulated a lot of backlogged cases over the years. What Team Qin means is that I hope you can spare some time to specifically attack these backlogged cases."

"Tackling the backlog of cases?"

"Well, some of our previous cases, such as those from more than ten years ago, actually found clues such as footprints or fingerprints, but it took too long and there hasn't been much progress in recent years. You are good at these aspects, give it a try , if you can make some breakthroughs, not too many, even one or two cases would be good."

Of course Lu Chuan would not refuse Qin Yong's arrangement.

What Lu Chuan usually does is identify fingerprints and scan some footprints.

He had dealt with the detachment's backlog of cases before, and had succeeded in two of them.

Not long after Lu Chuan started working, he checked the previous backlog of cases of the Haizhou City Criminal Investigation Team.

To be honest, there are a lot of cases, including homicide cases, rape cases, theft cases, arson cases and everything in between.

These cases span a relatively long period of time, with the longest case being more than [-] years old and having passed the prosecution period, while some more recent cases were about four or five years ago.

There are actually many clues left behind in these cases, including fingerprints, footprints, DNA information, blood stains, etc.

About 15 years ago, there was a large-scale clean-up of criminal investigations in Haizhou City.

At that time, the DNA identification laboratory was just established, and DNA identification technology was fully promoted across the country.At that time, many cases involving DNA comparisons suddenly made breakthrough progress.

There are even some grassroots police stations and criminal police brigades that have cleared their backlog of cases.

Of course, DNA identification is not omnipotent. Even if DNA information is left in some cases, it may not be possible to identify the suspect.

After the large-scale popularization of DNA identification technology, criminal suspects have also become smarter.

In Lu Chuan's view, the progress of criminal investigation technology is directly proportional to the technological progress of criminal suspects.

In the past, when fingerprint identification technology was imperfect, few suspects wore gloves when committing crimes.

Nowadays, as long as it is not a passionate killing, as long as it is a premeditated and planned killing, the murderer rarely leaves fingerprints at the scene.

"Xiao Lu, I have specially applied for a separate office for you."

Liu Guodong pointed at himself, as well as Lao Yang and Lao Bai: "Captain Qin specifically told us not to disturb you during this period."

"Master, there's no need for this. There's nothing to disturb you. I'll just go directly to the laboratory in our basement."

"There is no one in our laboratory. Usually only a few of us go there. I can just move this computer down."

Whether it is fingerprint identification analysis, footprint identification analysis, or other identification analysis, Lu Chuan feels that a quiet environment is still needed.

The environment of the current survey office is suitable for fishing, but not suitable for concentrating on tackling difficulties.

However, Lu Chuan didn't think it was necessary to arrange a so-called separate office. The current laboratory was usually quiet because no one went there.

That's just the right place.

Liu Guodong thought for a while and agreed: "Okay, then go to the laboratory. If you need anything, you can call us anytime."

In this way, Lu Chuan moved the computer down before lunch.

Opening the backlog database, Lu Chuan didn't just pick a case to start with.

First of all, Lu Chuan is self-aware. It is impossible to solve all these backlog cases. Even if all Lu Chuan's skills reach an advanced level, not all cases can be solved.

What's more, some cases have already passed the prosecution period, and they were all cases 30, 40 or even 50 years ago. Even if they are solved, they will not have particularly important practical significance from the perspective of actually punishing the criminal suspects.

Lu Chuan didn't just focus on the murder case to deal with the backlog.

After all, no matter what era a murder case occurs, the detachment will definitely use the entire team to tackle it. Cases that were not solved back then will definitely be more difficult to look back on now.

After all, so many years have passed and the scene no longer exists. All clues can only be obtained from the files.

The file was written by the criminal police who handled the case at that time, not even by one person. Everyone's ability level and written expression are different, so the information obtained in the file is actually relatively limited.

Captain Qin Yong also did not designate Lu Chuan to only handle the backlog of murder cases.

Therefore, Lu Chuan decided to deal with the backlog of cases one by one according to the number of years, from recent to forward.

No matter what the case, as long as Lu Chuan has the ability, he will choose it.

At the same time, Cheng Zihao from Liangzhou also received a call from Qin Chuan.

(End of this chapter)