Warehouse now under investigation.
Yang Sen found a yellow cardboard box in a corner and blew away the non-existent dust on it. The warehouse with constant temperature and humidity was very clean.
"Xiao Lu, this case has some background. If you can find the suspect in this case, our investigation will be exposed!"
Seeing the box that Yang Sen picked up, Liu Guodong and Lao Bai knew what this guy was planning.
Liu Guodong nodded in agreement: "Old Yang is right, you should read the file first."
Although Lu Chuan felt that the three of them were a little mysterious, it didn't matter to him. He had just acquired the footprint analysis skill, and he had made great achievements in a small trial, and he was now getting better at it.
"Theft?"
Lu Chuan was slightly startled when he opened the file. How could there be a backlog of theft cases in the criminal investigation detachment?
Theft cases are not among the eight major categories. Generally speaking, the police station below is responsible for investigating.
There is a process for handling cases, and who will handle what type of case is determined.
It is not allowed to overstep one's authority or handle cases arbitrarily.
Of course, there are some cases where the nature is not easy to determine, such as robbery and robbery.
As long as it is a robbery, no matter whether someone is injured or not, no matter how big the amount is, the minimum limit is three years. If it is a robbery on a bus, a home invasion or multiple robberies, it is more than ten years.
But for robbery, the cap is generally three years. Of course, if the amount is too large or huge, it can be capped indefinitely.
There is a dividing line here. Whether there is violence or coercion during the crime, if it is, it is robbery, if not, it is another matter.
For example, if a speedster gang snatches a bag without using violence or injuring anyone, then it is possible to locate and rob it.
For ordinary theft, unless there are some cases with extremely large amounts and relatively bad impact, the criminal investigation will come forward. Small cases are the matter of the police station.
As for this case, the amount involved was only over 10,000 yuan. Oh, there was also some gold jewelry, but it didn't seem to be related to the huge amount.
"Brother Yang, the amount of this case doesn't seem to be very large. Why is it placed in the detachment?"
The corner of Yang Sen's mouth curved in an inexplicable way: "Because the person who was stolen is special."
"special?"
Lu Chuan opened the file and found that the person who had been stolen was an old man in his sixties: "Who is the leader?"
Yang Sen shook his head: "Guess again."
Where the hell are you guessing?
Liu Guodong took out the remaining information in the box: "Don't guess, the owner is Song Jiangguo's father-in-law."
Um?
"Who is Song Jiangguo?"
"Director..."
Lu Chuan: "..."
The case was from two years ago. While reading the file, Lu Chuan was curious: "Captain Qin... was he scolded badly?"
"No, Director Song is not such a stingy person."
Um?
"That's the car Captain Qin was riding in. It was supposed to be replaced with a new one, but it turns out it's been driving for ten years now..."
oh.
Lu Chuan nodded, this is right.
The file was very simple. The thief who stole the crime was a habitual criminal. The scene was clean and tidy, leaving nothing but a series of footprints.
"We went to the scene that year and the unlocking method was very professional. He is definitely a repeat offender."
"The director's father-in-law's house was stolen. Although it didn't spread, it was considered a sensation internally. That week, the entire Haizhou City was scanned for habitual thieves, but no one was found."
"The other party is probably a mobile case. The father-in-law of Bureau Song lives in an old community and there is no surveillance. In the end, we can only let it go."
"Oh, by the way, Director Song let it slip at that time. When the case is solved, when will Team Qin be replaced?"
"Ding!"
"Advanced mission: Analyze the physical characteristics of the suspect based on the footprints of the theft, issue a wanted order for internal investigation, and assist in arresting the suspect."
Still at the same desk as in the morning, Lu Chuan laid out all the footprint photos taken on site one by one and observed them carefully.
"Master, didn't you ask the footprint analysis experts from above to analyze the footprints?"
Liu Guodong smiled bitterly and shook his head. Because of this incident, Liu Guodong and the three of them did not raise their heads for half a year: "The father-in-law of Haizhou City Public Security Bureau was robbed. How can we have the shame to ask others for help? The family scandal cannot be made public."
This is true. If he really asks for help from outsiders, Song Jiangguo can probably kill Qin Yong.
The footprints were very complete, and the suspect obviously did not pay any attention to the protective shoe prints.
Habitual thieves are like this. As long as they leave no fingerprints, no one can find them, and they won't admit it if they are found.
Conviction is based on footprints, and few thieves know this.
After some observation, Lu Chuan took the millimeter ruler and started measuring the data.
Compared with the measurement of fingerprints, the error requirements for footprint measurement are not as high.
Generally speaking, the millimeter level can meet the calculation and analysis requirements.
But the measurement of fingerprints is not possible. Compared with footprints, fingerprints are smaller. When measuring, vernier calipers are often used, and sometimes laser measurement is even required.
Of course, the latter is only used by expert fingerprint analysts, and ordinary people... can't even use vernier calipers.
Yang Sen saw Lu Chuan starting to measure, and rubbed his hands eagerly: "Xiao Lu... haha, can we see how you operate it?"
As soon as Yang Sen spoke, Lao Bai and Liu Guodong also turned to look over.
Footprint analysis is different from fingerprint analysis. Currently, there are standard processes and mature methods for learning fingerprint analysis.
But footprint analysis is not good, what is written on paper is superficial, and the real unique skills are in the hands of a very small number of people.
For example, they knew of a footprint expert from a northern province who passed it down from grandfather to son, and from son to daughter.
Therefore, if Yang Sen wanted to learn something, he needed Lu Chuan's permission.
"There's nothing not to see here."
Lu Chuan didn't care, it was no secret.
It's just that some things seem to be characteristics of skills. Compared with the calculation of data and the selection of some measurement points, it is the intuition or experience.
As soon as Lu Chuan got started, he knew which point to choose.
"When I was in college, I had some experience in footprint analysis and spot photography. For other things, I relied on my seniors to teach me."
To be honest, Lu Chuan said that he has obtained these two skills now, and the others are really not good.
And both Liu Guodong and Yang Sen Laobai took good care of Lu Chuan.
Yesterday during the field survey, I did not hesitate to teach some tips.
Comparing one's feelings with one's own, Lu Chuan had no reason to be self-conscious.
When Lu Chuan said this, the atmosphere relaxed a lot, and the faces of Yang Sen and the others became less embarrassed.
However, as they watched, the three of them frowned deeply.
"Xiao Lu...why did you choose these two points for measurement?"
"Xiao Lu, is the ratio of these two data useful?"
Many things cannot be learned just by looking at them. It's like everyone knows that Teacher Jia's hand skills are amazing, but so many people have seen them and no one has ever heard of them.
Of course, this is partly due to technical reasons, and partly due to the lack of experimental materials.
Furthermore, some naturally dry lands cannot be compared with paddy fields.
Three people asked and one answered, time passed quickly.
5:32 p.m.
Looking at the manuscript paper where the calculations had been completed, Lu Chuan stretched.
"Finally done."
On the manuscript paper, the suspect's physical characteristics have also been analyzed.
