Chapter 347 Results of the Survey
Cheng Zihao is forty-one today. After graduating from the police academy, he worked in the Liangzhou Public Security Bureau.
It’s just that when Cheng Zihao first joined the job, he was not a criminal police officer, but was assigned to work in the traffic police detachment.
The workload of the traffic police detachment 20 years ago was not as heavy as it is now. There were few cars on the road at that time, so the work was relatively easy.
Cheng Zihao doesn’t have to stand under the sun directing traffic every day.
However, the traffic police are indeed not very talented. There are some who have just entered the system and can see their life after retirement at a glance.
Different times create different attitudes towards life. The pace of work and life is very different 20 years ago and now.
Cheng Zihao is a person who is unwilling to be ordinary. What he yearns for most is criminal investigation work.
Fortunately, there was an opportunity that year when Chen Zihao caught a thief while patrolling the street.
This guy is still a habitual criminal and has many cases in his hands. Cheng Zihao was commended by the notice back then.
Because of this commendation, the criminal investigation detachment was relatively short of personnel in those years. The head of the criminal investigation detachment there noticed Cheng Zihao, so he took the initiative to recruit him to the criminal investigation detachment.
This criminal police officer has been working for 20 years. Now Cheng Zihao is the deputy leader of the action group of Liangzhou City Criminal Investigation Detachment.
Three years ago, Cheng Zihao was the main investigator of the case of mutilated corpses in the sewage river. Later, when the case became a backlog, the detachment assigned the case to him.
Cheng Zihao is interested in this case. Whenever he has a chance, whenever he hears that there is a more powerful criminal police somewhere, he will find a way to ask and let the other party look at the files.
Last week, he went to Haizhou City to have dinner with his brother-in-law's family. He heard Qin Yong talk about Lu Chuan's affairs. When he got back, he sent the file to Qin Yong and asked Lu Chuan to help him take a look.
Originally, I just had the attitude of giving it a try. After all, there were too many people watching this case.
There is more than one expert from the provincial department, not to mention that Lu Chuan is a current detective.
But basically nothing was left at the scene of this case.
Cheng Zihao did not expect that Qin Yong would feedback the results so quickly, but it was still a relatively important clue.
Of course Cheng Zihao knew the indentation on the body.
During the forensic examination that year, this indentation was also discovered, which was L-shaped.
Everyone basically feels that it is a trace of the suitcase containing the body, formed by squeezing it.
Unexpectedly, Lu Chuan actually thought that this mark was left by the steel hook used to open the manhole cover.
Cheng Zihao occasionally saw people using this kind of hook when opening manhole covers.
Indeed, only pipe repairmen would use this kind of thing.
Looking at the indentations on the picture and the speculation that Qin Yong called him, Cheng Zihao frowned.
Part of the mutilated corpse was found in the sewage river, so the Liangzhou City Criminal Investigation Detachment focused on investigating the maintenance personnel of that section of the river.
The conclusion is that there is no corpse dumping point nearby, there is no maintenance plan, and the workers at the time have also asked questions.
Now it seems that it is still necessary to check again.
After packing up, Cheng Zihao said hello to the team leader and left the office.
The sewage channel where the body parts were found is managed by the municipal government, and the maintenance work was carried out by a professional construction team that specializes in repairing this pipeline.
No. 128, Qinghe Road, Cheng Zihao came here three years ago, and he still has some impressions.
Shunfa Pipeline Repair.
"Who are you looking for?"
The team was in a large courtyard. When Cheng Zihao came in, he saw a lot of materials piled in the yard, as well as a pile of steel hooks.
The old man guarding the gate was still the old man from three years ago. Cheng Zihao also had some impression: "I am from the Criminal Investigation Detachment of the Municipal Bureau, and I came to understand the situation."
As he said that, Cheng Zihao took out his ID and showed it. . The uncle hurriedly stood up: "Comrade police, our captain is out. There is maintenance today. There is no one in the yard. What do you want to ask?"
Cheng Zihao didn't care, he came. This is actually just for peace of mind.
After all, he had been here before and found nothing.
Now that three years have passed, it is unlikely that anything will be discovered.
Besides, the information given by Qin Yong is that the indentation may have been left by the manhole cover steel hook, but it is only possible.
After all, it is just a trace, and what you see is not that real.
"Brother, I want to ask about Changchun Street..."
...
Haizhou City Criminal Investigation Detachment is currently investigating the underground laboratory.
Haizhou City Criminal Investigation Detachment has no remaining cases this year, but there were two cases last year.
One of them is theft and the other is robbery.
What Lu Chuan is currently tackling is the robbery case.
During the police investigation, they found half of the other party’s face on a surveillance camera.
However, there is no way to compare faces with only half of the face. What Lu Chuan is doing now is to improve the definition of this face.
Lu Chuan did this not to perform facial recognition on this face, but to use this half of the face to compare it with the library of ex-criminals.
The scope that Lu Chuan targeted was Haizhou City. In this case, the amount of data comparison was very small, and Lu Chuan identified these people with a history of robbery.
From a criminal psychology perspective, whether it is robbery or theft, as long as it is done, it is often not just one time.
This thing, as long as he runs out of money, his hands will itch.
Some criminal suspects will subconsciously choose a crime pattern and continue to commit it.
For example, those who steal will always steal, and those who rob will always rob.
It does not mean that criminal suspects only like to commit theft or robbery, but both theft and robbery have their own characteristics.
Thieves pay attention to skills. Burglary, theft in public places, and petty theft all require certain skills.
Robbery is different. Robbery does not require skills, but it does need to be steady and ruthless. Aim at one person, grab something and run away immediately. It is best to be familiar with the terrain.
What stood out was that it was so quick that before the other party could react, the items had already been snatched away.
Or even if he reacts, the suspect can easily avoid being chased and intercepted and achieve his goal.
Soon, Lu Chuan used the abilities that came with the advanced fingerprint identification and analysis skills to process the details and improve the image quality on half of the face.
Then, call out all the portraits of all persons of similar age groups and with a history of robbery. There are 92 photos in total.
This data may not seem like much, but it is actually quite a lot.
There are probably more than 500 people in Haizhou City who have a history of robbery.
These more than 500 people have been accumulated over the years. Among them, there are more than 90 people who are similar in age to the half-faced man in the video, between 20 and 30 years old.
This age group is also the age group at which suspects commit robbery crimes.
As for the reason, Lu Chuan guessed that people of this age group are relatively poor.
Compared one by one, Lu Chuan's eyes soon showed joy.
Sure enough, dogs can’t change their habit of eating shit!
(End of this chapter)