civil forensic

Chapter 299 Toner
Wang Bo's running in the sun has already attracted Yu Wenshu's attention.

The sound of running quickly made Comrade Yu Wenshu realize that the on-site exploration was fruitful.

Yu Wenshu was still organizing people below, trying to find ideas along the accountant's interpersonal relationship—in case he himself hit someone else's child, pushed down someone else's old man, or stole someone's takeaway or something, it would cause trouble. The murderer's ferocity, the case will be solved immediately.

However, Yu Wenshu was still more inclined to rob and kill, so when he realized that Jiang Yuan had made a breakthrough, Yu Wenshu immediately put down other things and came to the scene again.

He Guohua was holding the site survey lamp, changing the wavelength, looking for the window frame there.

Yu Wenshu understood it at a glance, and couldn't help asking a little excitedly: "Can you find the murderer's fingerprints?"

"It's possible." Jiang Yuan replied casually.

Yu Wenshu's eyes widened immediately: "Hey, can you find it? Are you sure?"

"It's possible. I don't know yet, let Xiaobo go get things." Jiang Yuan didn't have anything to say, that's all he could say.

Yu Wenshu said "enen" twice, and quickly suppressed his excitement.

As the head of the criminal police detachment, he was originally a master at controlling emotions, but this case was really a bit of a grind.

Regardless of the case that happened today, Yu Wenshu has not been idle since the incident until now, and neither has the entire Criminal Police Brigade.

When a robbery and murder case encounters difficulties, it is really difficult.

Watching the case slide down step by step, the anxiety in Yu Wenshu's heart multiplied and accumulated.

The main reason is that at the end of the year, if the results of everyone's hard work for so long are obliterated by this murder case, Yu Wenshu, as the leader, will feel guilty.

But the case in front of him is just slippery.

Judging from Yu Wenshu's experience, this case is very consistent with the characteristics of a habitual criminal who commits crimes.

The construction site was originally a place where fish and dragons mixed together. In the current labor market, migrant workers all require daily wages, and there are basically no requirements for things like ID cards.In such an environment, it is inevitable that there will be fugitives.

It doesn't even need the fugitive to work at the construction site himself, as long as he chats with some workers, he can know where there is a recent job offer and where a payment has to be made recently.And the place where they chat together may be a temporary dormitory where roommates don't know each other, or it may be a roadside meal where they meet by chance.

It is equivalent to saying that this line is likely to be impossible to check.

If the investigation along the line of the murderer's information source cannot continue, Yu Wenshu's second thought is to follow the murderer's modus operandi to investigate.

Yu Wenshu is below, and has already started arranging this work.

Relying on good health and familiarity with the construction site, robbing the construction site of cash, etc., can be said to be a crime pattern that fits the status of a fugitive.

If it is a pattern, it may be used multiple times.It's just that no one may have been killed before, or even seriously injured, so each place handles it as a separate case.

However, Yu Wenshu is very clear that even if his idea can be verified, the subsequent detection process is still complicated.

The reason why a fugitive is a fugitive is that he has been on the run for at least a while. It is not easy for this kind of criminal who is gradually adapting to the life of a fugitive to determine his identity and arrest him.

If Jiang Yuan could find the fingerprints, then from the perspective of the pressure of detection, solving the case would become a pursuit, at least it would not lose 300 points for the current case.

On the other hand, chasing and fleeing in this situation is a bit simpler than solving the case.In such a hurry to find Jiang Yuan, one idea was to block him in Changyang City.

In the case that was just reported today, it is difficult for the murderer to process the 10,000+ yuan in cash on the same day, and the probability of taking it out of the market is relatively small.

But after today, he is likely to find a suitable means of transportation, or a suitable means of cashing out.

Yu Wenshu originally had expectations for Jiang Yuan's field survey ability, but now he simply couldn't go on, so he stood on it and looked at it, and asked, "What's wrong with this window?"

"The murderer jumped from the window." While observing, Jiang Yuan told Yu Wenshu what he said before.

Yu Wenshu was shocked when he heard this: "It means that you have identified the murderer's footprints?"

"Yes." Jiang Yuan nodded.

"That's a good thing, um, send me the photo of the footprints, and I'll ask someone to search below immediately to see the distribution of the murderer's footprints." Yu Wenshu is also a very smart person, and he found it immediately Use the footprint method.

This time it was Jiang Yuan's turn to slap his head: "I forgot. Team He, you send a copy to Yu Zhi."

The strategy proposed by Yu Wenshu is very useful.

Now, there are a lot of footprints on the construction site, including the murderer, it is almost impossible for people who enter and exit the construction site to avoid leaving footprints.

The reason why it cannot be used is that there are too many footprints, and more importantly, it is not known what the murderer's footprints look like.

Now that I know, the trace inspectors and surveyors in Changyang City can find out all the footprints on the construction site, and see where he entered and left the construction site.

Although the value of the construction site is lower than the scene in the room, if the murderer's route can be determined, the case can be greatly advanced.

If the murderer had been to the room where the workers played cards, then the possibility of an inside crime could be considered.If the murderer's route is single, then you can consider the possibility of hitting the previous station, etc...

He Guohua quickly sent the photos of the footprints to Yu Wenshu.

Yu Wenshu also immediately lowered his head to operate, and asked: "Can you see anything from the footprints?"

"The murderer is about 30 years old, light in weight, most likely less than 130 catties, about 1.6 meters five in height, male..." Jiang Yuan had carefully read the footprints before, and he will directly report the conclusion.

Yu Wenshu directly recounted Jiang Yuan's judgment to his subordinates.

At about the same time, Wang Bo also ran back.

"I disassembled a printer's ink cartridge." Wang Bo put a small half bottle of printer toner in the bottle, handed it to Jiang Yuan, and asked, "Now?"

"Now it's time to mix toner and magnetic powder, and then try to brush it. It's best to use a feather brush." ​​Jiang Yuan gave the plan in detail, and said: "When the murderer jumps out of the window, there is a high probability that he will use It takes a short time and a lot of strength to support it with your hand, and this kind of fingerprint may be missed, but it is actually not easy to show it.”

When Jiang Yuan spoke, He Guohua nodded vigorously.

There are too many fingerprints here, no one can collect all the fingerprints.

Instead, after pointing out the particularity of the fingerprints, the clues can be connected in series.Only what a few people are doing now can reflect the value.

Ordinary fingerprints, when the magnetic powder is applied, will appear directly.

This kind of fingerprint is useless instead.

Jiang Yuan and He Guohua were like two old scumbags who gave up after taking a photo when they saw the fingerprints that showed up easily.

After Jiang Yuan used magnetic powder and printer toner, gently dipped it with the tip of a feather brush, and brushed it on the window sill over and over again, the fingerprints that shyly showed his face were paid special attention to by the two of them.

"Let me compare and see first." After Jiang Yuan took the fingerprints, he started to make feature points on the spot.

He Guohua began to finish.

Yu Wenshu was overwhelmed and didn't dare to interfere with Jiang Yuan. He couldn't help but think in his mind that if this was a pure robbery and homicide case, the sentence would be heavier than ordinary homicide cases, and most of them would be executed immediately.

It is equivalent to saying that if the case is solved and the murderer is caught, the countdown to life will begin immediately.

Ningtai and Jiangyuan are raging with ferocious flames.

Sure enough.

(End of this chapter)