Chapter 158: Murder Weapon

The commercial street of Ningtai County is built in the image of Nanjing Road.

Of course, the prosperity and scale of the two are not proportional, but the leader's fist-like heart is worth praising.

In general, the most central commercial street in Ningtai County is to seal a road that was originally a road, open the shops on both sides, and by the way, demolish a few buildings to do business, expanding the commercial space.

At the same time, there are constantly small alleys and intersections connected in the middle of the commercial street, gathering and dispersing the crowd.

Before online shopping became popular in the county, the density of people on the commercial street alone was not inferior to Changyang City, the provincial capital.

The discount store that Jiang Yuan and others found was at the corner of a small alley and the commercial street.

And it is a surveillance blind spot.

"This person has studied surveillance quite thoroughly." Leaving the police station, Wen Ming frowned.

He has been a criminal police officer for several years, and he has never seen such a difficult criminal.

Before this, the problems he encountered were more legal problems, procedural problems, and sometimes trouble from the victim's family or superiors.

The criminal this time gave Wen Ming a completely different feeling. It was a bit like holding a lure to go wild fishing. You think there is a snakehead in this pond, so you cast the bait, dragging the fake frog, various camouflage reptile actions, but whether there is a snakehead in the pond, before it is hooked, it is actually unknown.

Jiang Yuan comforted Wen Ming, who had more seniority, and said: "At least the shoe style is obtained. You can check other surveillance when you go back to see if there is any guy wearing this shoe."

The two clerks in the discount store also made some descriptions of the murderer, but for the middle-aged man with a public face, when expressing it in language, it was really ordinary and ordinary, and it was difficult to use it as a basis for arrest.

Although Huang Qiangmin has applied to his superiors for a portrait artist, everyone has no hope for this.

There are currently two portrait artists in office in Shannan Province, and their workload is gradually decreasing.

The problem with portraits is not whether they look like or not, but that it is difficult to use portraits to find the murderer. More of it is used for reverse determination. That is, after catching the criminal suspect, compare it with the portrait.

But in the case of eyewitnesses, this mode is really taking off pants and farting, doing more than necessary.

Some units even think that portraits interfere with investigation...

Still using the Bai Yin case as an example—

The reason why this case is famous nationwide is that it has exhausted various criminal investigation methods, but various criminal investigation methods are useless. It has fingerprints, fingerprints didn't match; it has DNA, did DNA for all men in the city, still didn't match; it even has portraits, and after catching the person, the portrait was quite similar, but in the investigation stage, it still didn't match.

After the case was finally solved, Gansu Province alone had 5 people awarded first-class merit, 12 people second-class merit, 19 people third-class merit, and 24 people commendation.

Some police officers can say that their life's efforts were used in this case.

Perhaps some people say, how come the movies and TV series in the Lighthouse Country have portrait artists who are awesome.

Because they are immigrant countries.

The distinctiveness of the appearance of immigrant countries is high, and portrait artists are easier to grasp the characteristics.

In many small places, a gene expression may really be just such a person. For example, a big cake face, for example, small eyes, for example, a collapsed nose, for example, black hair, search the whole town, maybe there is just such a person, and there are not many.

And in countries where inheritance is orderly and gene fusion is relatively full, the work of portrait artists is not so easy to do.

Moreover, it was not cultivated in the early stage. By the time the professional level of portrait artists gradually improved, cameras across the country were laid out faster.

Conversely, in the Lighthouse Country, everyone is unwilling to let the government have privacy rights, and the installation of cameras is really limited.

The national conditions are different, and the police's operation methods are also worlds apart.

Out of respect for the homicide, Huang Qiangmin invited the portrait artist from the province.

But the focus of the work is still sweeping surveillance.

More than a dozen people were circled out and began to sweep surveillance in the image office.

The surveillance around the commercial street and the surveillance around Wanghe Building are all an area, but the surveillance of many days and the surveillance of different departments added together is a huge quantity.

Even if it involves a homicide, otherwise, without a map investigation department, just integrating these surveillance videos has huge difficulty and burden.

This is also the core reason why map investigation brigades were established in various places.

The main benefit of having a map investigation brigade is to merge the usage rights of surveillance from various departments, reducing many unnecessary internal friction.

As for image enhancement and the like, map investigation departments outside the provincial capital do not pursue it.

Can't hire people, and can't keep them if hired.

Jiang Yuan searched the footprint database through the sole pattern, and didn't get results. It shows that the criminal suspect really bought a set of clothes in the store to commit the crime.

This also indirectly indicates that the criminal suspect's purpose is very strong and it is a premeditated crime.

So, according to the traditional mode, the old criminal police who touched the interpersonal network along the line of grievances and grievances came to spirit.

You premeditated the crime, there must be a reason, right? It shows that there is a motive.

Then if you can find the motive, or find people who have conflicts, can you find the murderer?

The deceased is still a young man, with a small social contact surface, that is to say, counting the people with family conflicts, there are not too many.

Several old criminal police set off to run around.

Jiang Yuan is not optimistic about this.

The reason is very clear. Although it is a premeditated crime, people who want to kill because of grievances and grievances are ordinary people.

The criminal suspect this time is not ordinary.

At least, he knows how to hide from surveillance.

This skill, it is not difficult to say, but it must have been learned, and it is not just simple learning, it must be practiced.

The surveillance on the street, the cameras are basically not hidden, they are placed there clearly. Even so, ordinary people or first-time criminals cannot avoid them all.

Even the surveillance of Wanghe Building, the murderer avoided the main entrance and the lobby. It is estimated that he entered it through methods such as employee passages.

Without surveillance video, there is no image enhancement to do.

Footprints and fingerprints are all gone.

Jiang Yuan took out the photos of the autopsy taken by his master and looked at them several times, and there was no harvest.

After a few days like this, some people began to question the problem of homicide or suicide again.

At this time, the first batch of trace evidence sent to Changyang City was sent back.

Not only Jiang Yuan, but half of the technical personnel of the Criminal Science Squadron gathered to study.

Trace evidence, it often proves the existence of a certain substance. As for the meaning it represents, everyone still needs to analyze and study it themselves.

Each trace evidence inspection report is packaged with a kraft paper bag.

Inside are a few pages of paper, A4 paper specifications, with tables, data, and analysis conclusions.

Jiang Yuan dismantled one, looked at one, and handed one to others.

Everyone passed it silently.

Trace evidence in different positions may be meaningful or meaningless.

Interpretation is also relatively important.

However, the focus is still on those substances and contents that cannot be explained by common sense.

Jiang Yuan frowned and soon finished reading half of the kraft paper bags.

Just when his mood was a bit low, the conclusion in a new kraft paper bag attracted Jiang Yuan.

"They found wood chips in the trace evidence on the deceased's chest." Jiang Yuan's finger pointed virtually, and his eyes were slightly bright.

Lu Jianfeng immediately took it to see, and specifically looked at the picture, gestured in front of Wang Zhong's chest, and said: "The position is very interesting, the murderer used a weapon?"

Jiang Yuan looked directly at Wu Jun: "Master, did you notice the swelling here?"

"The position of the chest? There is indeed a little swelling. I took a picture." Wu Jun answered, and also took the trace evidence inspection report to look at it carefully.

Watching and watching, Jiang Yuan's brain circuit suddenly connected:

"It's a mop stick, right."

Jiang Yuan muttered a sentence.

Now, everyone's brain circuits are connected.

"Very likely." Lu Jianfeng slapped his thigh, reached out and gestured, and said: "Take a mop stick and poke the victim's chest, and you can poke him down. Look at the position of the shoes in the video photo, is the distance just right?"

Photos and so on are all here, a few people spread out to see, all nodding repeatedly.

"But the victim just stayed on the window so obediently, let him poke? And why climb the window?" Image office Gao Jiansheng gestured the distance and raised questions at the same time.

"Good people, climbing the window, either for money, or suffered grievances, otherwise, it was bullied?" Wu Jun analyzed one by one.

"In this way, other employees in the victim's company are suspects." Lu Jianfeng pondered.

Jiang Yuan naturally followed this line and reminded: "Must find this mop stick! This is the murder weapon now."

--- Off-topic ---

I slept too late these past few days, a bit unable to hold on, so there is only this update today. ===== CHAPTER 159 =====

"But would the victim just stay obediently on the windowsill and let him stab him? And why would he climb the window in the first place?" Gao Jiansheng from the imaging office gestured to show the distance while raising the question.

"A perfectly fine person climbing a window—either it's for money, or they've been wronged, or otherwise, they were being bullied?" Wu Jun analyzed them one by one.

"In that case, the other employees in the deceased's company are suspects." Lu Jianfeng pondered.

Jiang Yuan naturally followed this line of reasoning and reminded them: "We must find that mop handle! It's the murder weapon now."

---------- Author's Note ----------

I've been sleeping too late these past few days and can't really keep up, so there's only this one update today.