Chapter 646: Stirring the Overall Situation

Hearing that paint was found, Tao Lu and others were even more excited.

Tao Lu was a criminal police officer, and he didn't understand criminal science, but he knew one thing: as long as there is paint evidence in the inspection material, the laboratory basically won't miss it, and will give some explanation more or less, and the court's adoption is also very extensive.

This is because the application of paint evidence is extremely extensive. The most common is car paint. In road traffic accident cases, vehicle paint evidence is often used to lock the suspect vehicle, used to judge whether the collision played a key role. In addition, ship paint, architectural paint, spray paint, etc., also frequently appear in cases.

And the complex composition of paint may be a trouble in industry, but it is very easy to use in criminal identification. There are even more outrageous inspection methods, such as microscopic inspection, infrared spectroscopy, Raman spectroscopy, scanning electron microscopy, X-ray energy spectrum, X-ray fluorescence spectroscopy, Py-GC/MS inspection—if the loyalty of officials can be detected by so many technologies, clean government would have long ago become a basic operation.

The police bureau's own trace evidence laboratory didn't dare to neglect, working overtime to help insert the queue.

In just one day, the inspection report was sent to Tao Lu's desk.

Tao Lu quickly flipped through the inspection report, and his face was already filled with a victorious smile.

The special task force members who heard the news filled Tao Lu's office for the first time.

The director of the inspection center smiled and passed the report to everyone, and explained on his behalf: "The white particles are indeed paint, and they come from Foton's micro-truck. We used a variety of methods to verify. The report uses the most mature infrared spectrometer for testing. You can see that there is an absorption peak of 1724 in the sample, and there is also an absorption peak of 1601 and 1583..."

Several senior criminal police officers nodded "hmm hmm", as if dealing with their wives, not listening to the director's painstaking explanation at all, and at the same time stretched their necks to look at the report, as if they could understand it.

The director of the inspection center suddenly had a resentful expression: "The final conclusion has already been told to you..."

"If it's a micro-truck, then check the vehicle's driving trajectory first? To be on the safe side, visit the nearby residents again? This kind of car is still very conspicuous in the residential area." Cui Qishan looked at the report, his emotions already up: "It's just that the time span is relatively large, but it shouldn't be a problem."

In the current police system, as long as the vehicle's license plate is entered, you can see its driving trajectory for a long period of time in the past. Of course, this kind of driving trajectory is mainly completed by surveillance, which belongs to the application of big data, saving criminal police from following cars like blind eyes.

Even if the vehicle covers the license plate, etc., the police can also call out its trajectory through fuzzy search.

Liu Cheng on the side said: "It should be possible to find similar cars passing by nearby. I don't know how many there will be, but looking for them one by one, there is not much workload."

"There is a problem. There is paint of the box truck on the skeleton, which does not mean that the box truck has to be driven to the empty land. It is possible that the box truck is the first scene, the empty land is the corpse abandonment site, but other means of transportation are used in the middle."

This sentence is the key, which washed away a lot of the blood of several criminal police officers.

Tao Lu turned his head and took a look, but it was Xiao Si of the special task force newly built by Cui Qishan who poured cold water.

Liu Jinghui coughed twice and said: "The box truck may indeed be parked at other locations, but I think the probability that it has been driven to the empty land is still very high. Otherwise, the transport of six corpses is a huge trouble. Even if the murderer didn't understand at the beginning, after transporting corpses once or twice, he would give up this method."

"Micro-trucks generally have a length of three meters or three point two meters. Many places in the city cannot run. This empty land, at least during the day, cannot run. Driving over at night, dark and dark, is not very convenient, and it is conspicuous." Xiao Si has invested a lot of time in this case and has his own ideas, and will not be easily persuaded.

Liu Jinghui pondered the language, smiled again, and said: "It is indeed impossible to completely exclude this factor, but transferring corpses is not an easy thing. When the victim just died, the corpse was very heavy, so the murderer had to dismember it. Everyone has seen how buried the rotten corpse is. In this case, transferring the car is equivalent to adding difficulty to himself."

"And there will be a lot of evidence left on the car, and cleaning is also difficult." Tao Lu nodded to Liu Jinghui and said: "We won't consider the problem of transfer for the time being. Director Liu, you continue to talk. Oh, Jiang Yuan is here, Team Leader Jiang, sit here."

He is equivalent to denying Xiao Si's idea.

Tao Lu saw Jiang Yuan and revealed a smile from the heart. This case is clearly in sight, and it is all Jiang Yuan's credit.

He is a criminal police officer, and after a set of questions one, two, three, four, he can figure out the situation at the scene. And the young forensic experts in the field have long excitedly described Jiang Yuan's discovery experience again and again.

If this case is solved, this scene will be talked about by everyone for a long, long time.

Jiang Yuan greeted with a smile and didn't sit over, only saying: "I have read the electronic version of the report, you continue to talk."

Without waiting for others to speak, Xiao Si didn't give up and said: "I admit that the probability of changing vehicles is not high, but we must consider this situation. In addition, the paint we found should not be the outer paint of the vehicle, but the inner paint. If so, will the murderer just use Foton's paint to touch up the paint? I am not specifically raising the bar, but the price of Foton cars is relatively low, and repair shops using their paint to spray other cars is also possible."

Tao Lu and others frowned.

To say that Xiao Si is raising the bar, what he said also has a certain truth, and it must be included in the consideration.

Liu Jinghui waited for a while and said: "The core breakthrough point of this case is this car. Is it a box truck of Foton brand? I think we can check Foton brand first. Check all the driving trajectories that passed through the empty land. If there is still no, then consider the situation Xiao Si said."

He sorted it out like this, and everyone's thinking became clear instantly.

Cui Qishan grabbed Xiao Si and smiled: "Almost led into the ditch by you."

Xiao Si spread his hands and didn't force agreement again.

Liu Jinghui coughed twice again and said: "I have a clever way here, can try it."

Tao Lu looked over immediately. It is true that the budget for this case is not capped, and it is also true that he is guilty of having no money in his pocket. The clever way is particularly suitable for him.

Liu Jinghui continued: "I thought of it when I was looking at the transcript. Several residents near the empty land here are very frequent reporters and police callers. In addition, because of the desire for demolition, they are also very sensitive to these engineering vehicles, trucks, etc. The police records often mention it. Maybe we can check and compare the records of two years ago. Maybe there is a license plate number."

Tao Lu slapped his thigh, turned around and said: "Old Liu, this is handed over to you."

Liu Cheng hurriedly responded. This method is practical and inexpensive. Just send two people to check the records, and maybe it will become a breakthrough in this case. It is simply a gift from heaven. Even if it can't be found, it doesn't matter. What is the workload of two people?

Cui Qishan didn't have time to raise his hand. Until he went out, he still had some regrets and said to Xiao Si: "If you shouted yourself just now, they are all detachment leaders, so they wouldn't be embarrassed to fight with you. It doesn't matter if you can't fight for it. Tao Lu doesn't like you anyway."

Xiao Si shook his head and said: "I am equivalent to the stirrer in the excrement-stirring group. How could I be allowed to touch this cake."

Cui Qishan was stunned for a moment, stared at Xiao Si for a long time, and said: "If you are really a stirrer, you can't stir it." ===== CHAPTER 647 =====