Chapter 223 Document Inspection

Monitoring room.

Huang Qiangmin smoked a cigarette while watching Lei Xin interrogate the prisoner, and he kept commenting:

"The pre-trial is really impressive."

"This kid is lucky."

"Here is something else."

Then, Bai Yuequn casually brought out the eldest and second sons of the Yuan family.

Huang Qiangmin was stunned and almost jumped up.

Is this case back on his head?

Moreover, the Yuan family went from being the victims of burglary to being the suspects of planning murder?

Huang Qiangmin was like a wild civet jumping up and down in a melon field. He was happily eating melons when he looked up and saw a boy of about 11 or 12 years old, with a silver ring around his neck and a steel fork in his hand...

Huang Qiangmin covered his heart, took two breaths, looked at Jiang Yuan, and said, "This is troublesome."

Jiang Yuan was now confident and said, "If there is a case, just solve it. What's the problem?"

"Instructing others to kill people, this kind of case is the most troublesome. Basically, we can only solve the case with confessions." Huang Qiangmin's mind was full of lawsuits. Seeing that there were police officers all around, he said, "And it involves Yuan Jiansheng's two sons. Needless to say, it also involves the inheritance of Jianyuan Company. Oh, troubles are troubles."

What Huang Qiangmin didn't say was that this was not just a pure investigation and solving of the case. It had to involve some other issues more or less.

Jianyuan Company is a major taxpayer in Qinghe City, especially a leader among private enterprises, and has been rooted in Qinghe City for 20 years. It is really not something that Huang Qiangmin, a criminal police captain in a remote county bureau, can touch.

It is okay to solve the case, but to be honest, Huang Qiangmin is not qualified to touch other corresponding issues.

"I'll report to the higher-ups." Huang Qiangmin, a crocodile, is a little overwhelmed when he encounters such a salty matter.

For Qinghe City, Jianyuan Company, which is about to go public, is at its most prosperous time. Everyone wants to stand under the fruit trees and have a full meal in the harvest season. Who would have thought that the fruit trees would compete for fertilizer to this extent.

Jiang Yuan continued to listen to the interrogation, but his thoughts had quickly turned from conviction to the issue of behind-the-scenes instigation.

From the information they have learned so far, Yuan Yuming, the eldest brother of the Yuan family, and Yuan Yulang, the second brother, are both suspects.

Moreover, unlike killing someone with one's own hands, which requires time and ability to commit a crime, instructing others to kill is much less difficult.

As Huang Qiangmin said, to instruct others, it is often enough to just say it, so basically, confessions can only be relied on to solve the case. Without confessions, it is difficult to prove.

Interest relationship is also a route, but it is only applicable to the situation where the interests are paid first. In this matter, the eldest and second sons of the Yuan family may have paid more for information.

The promise they made to Bai Yuequn can be paid slowly in the next few years.

However, this person did not expect that after Bai Yuequn's alibi was broken, his emotions were already in a state of great collapse, and he did not care about the next few years.

Not long after, Bai Yuequn's camera was taken over.

Huang Qiangmin took it directly to the image detection squadron, and the technicians of the image detection directly inserted the camera into the data forensic analyzer.

Bai Yuequn thought that there was no use for setting a password for the camera. In fact, the current police evidence collection is all using this kind of equipment, directly copying data, automatically listing, and issuing analysis reports, and then directly operating on the computer or PDA.

Several recent photos were released soon.

Sure enough, there were some scenes of the third brother Yuan Yutang doing high-intensity sports, as well as scenes of celebrating birthdays for people, and photos of being tied up.

In the end, there was a single note, and Bai Yuequn took several photos in a row, which were very clear:

WeChat: 14556679

Without Huang Qiangmin saying anything, the technician with a computer here immediately put the WeChat account into the system to check.

Nowadays, network security has interfaces that directly link to WeChat, Alipay and other chat software. The police with authority can see the chat records by inserting the number.

Nowadays, telecommunications fraud is rampant, and network security uses similar methods to find scammers.

The WeChat account that contacted Bai Yuequn was obviously newly registered.

All the contacts were Bai Yuequn alone. After he added friends, he sent him a bunch of pictures.

The police officers of the picture detection immediately collected all the pictures.

In this way, scrolling down, you can see the WeChat account urging Bai Yuequn several times, as well as reporting Yuan Yutang's location.

The police officers of the picture detection recorded the time separately.

Although many people know Yuan Yutang's whereabouts, they still have to send someone to follow him, or find a way to find out through some means.

For example, Bai Yuequn himself is not very clear about Yuan Yutang's condition at the time.

Starting from here, maybe something can be investigated.

After Bai Yuequn implemented the plan to report Yuan Yutang's location for the last time, the WeChat account no longer sent any information.

After several image detection police officers looked at the pictures, they all fell into deep thought.

Or it can be called autism.

Using images to find the murderer is a route that is particularly in line with ordinary people's thinking.

But for image detection police officers, choosing any plan or route to track down the murderer means a lot of time cost and energy investment.

Just like finding a thief through a camera, there are always people who lose their phones and call the police, and want to see the surveillance video but can't. Most of the time, the police or image detection are too lazy to watch it.

Because the police can't really see the face of the thief when they look at the image. First, he has to make sure that the case really exists, that is, the thief really stole the phone, and it is best to have a clear surveillance camera to record it.

This means that if the thief knows a little and covers it a little, the main camera nearby will not be able to capture this action.

Of course, the owner is often sure at this time and shouts the slogan "It's him", but for the police, this is obviously not enough.

Secondly, after confirming the existence of security, the thief must be tracked down.

If you don't want to wait, it is best to follow the surveillance route and look for the thief's residence or means of transportation. If the thief lives in a village in the city, or there is a section without surveillance in the middle, or if he doesn't take a vehicle with a clear license plate, this road will be blocked.

Finally, if the person is caught, if the estimated value of the phone is not worth 3,000 yuan or 5,000 yuan, it basically does not meet the standard for prosecution...

Of course, the murder case in front of you must be tracked down.

But choosing which tracking plan is always a boring point for the image detective.

Jiang Yuan came over at this time and said, "Can you copy the photo of the note to my mailbox?"

"Oh, no problem." The police officer responded quickly, and gave it to Jiang Yuan on the spot, asking, "Do you want to ask the document examiner to take a look? It's just a few words, I'm afraid it's a bit difficult."

For documents with fewer words, there are people who think they have fewer words.

For documents with more words, there are naturally people who think they have more words.

Like the photo in front of you, "WeChat: 14556679" has only two words, a symbol and a string of numbers. When ordinary people compare, most of them consider the strokes of the words.

What Jiang Yuan is most concerned about is Arabic numerals.

Arabic numerals seem simple, especially compared with Chinese characters, there seem to be few points that can be identified, but in the development of modern document examination, Arabic numerals can actually provide a lot of information.

The frequency of modern people writing is getting less and less, especially in some economic cases, there are few words that can be identified, but some numbers appear very frequently.

Moreover, it is not only Chinese criminal investigation experts who need to study Arabic numerals. Criminal investigation experts from other countries, as long as it involves document inspection, will always study Arabic numerals.

A large amount of research and the participation of experts from various countries have made Arabic numeral document inspection also have a lot of theories and ready-made techniques.

For example, the way to draw a circle is the most basic form of digital symbols. From the perspective of form, 0689 are all fully closed, 235 has a semi-closed circle, and the direction of the circle is clockwise for 2358, and counterclockwise for 0 and 6.

Then, just by examining the way to draw a circle, you can find out the characteristics of some people's pen movements.

In addition, such as 14679, their starting and ending strokes, whether they extend out of the grid, the inclination angles of different numbers, etc., are also identification points.

When encountering such a string of numbers, the interval between numbers, the connection method between characters, the high and low relationship between numbers, etc., are also identification items.

In short, it doesn't matter if there are few characters, there are many ways to do it.

Jiang Yuan then sent a message to Huang Qiangmin: "Captain Huang, I want some handwritten materials from Jianyuan Company for document inspection and comparison."

Huang Qiangmin: "Who can I ask to do the document inspection?"

Jiang Yuan: "I can do it. I'll try it myself first."

Huang Qiangmin: