Chapter 298 Toner
Wang Bo's running in the sunshine has already attracted Yu Wenshu's attention.
The sound of fast running immediately made Comrade Yu Wenshu realize that the on-site exploration was fruitful.
Yu Wenshu was originally organizing people below, trying to find ideas based on the accountant's interpersonal relationships - what if he himself beat someone else's child, pushed someone else's elderly person down, or stole someone else's takeaway or something, causing a problem? Given the murderer's ferocity, the case would be solved immediately.
However, Yu Wenshu still preferred robbery and murder. Therefore, upon noticing that Jiang Yuan had made a breakthrough, Yu Wenshu immediately put aside other things and came to the scene again.
He Guohua was holding the on-site inspection light, changing the wavelength, and looking for the window frame.
Yu Wenshu understood it at first glance, and couldn't help but said excitedly: "Can you find the fingerprints of the murderer?"
"It's possible." Jiang Yuan replied casually.
Yu Wenshu's eyes immediately widened: "Hey, can you find it? Are you sure?"
"It's possible. I don't know yet. Let Xiaobo get the things." Jiang Yuan had no words to reply and could only say this.
Yu Wenshu said "Two times, and quickly suppressed his excitement."
As the captain of the criminal police detachment, he was originally a master at controlling his emotions, but this case was actually a bit annoying.
Although the case happened today, Yu Wenshu has not been idle since the incident, 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 doubled.
The main reason is that at the end of the year, if the results of everyone's hard work for so long are wiped out by this current murder case, Yu Wenshu, as the leader, will feel guilty.
But the case in front of me is so slippery.
Judging from Yu Wenshu's experience, this case is very consistent with the characteristics of habitual criminals who frequently commit crimes.
The construction site is always a mixed place. In the current labor market, migrant workers are required to be paid daily, and there are basically no requirements for things like ID cards. In this kind of environment, there are inevitably fugitives.
The fugitive doesn't even need to have worked at the construction site. As long as he chats with some of his fellow workers, he can know where workers are currently being recruited and where payment needs to be made recently. The place where they chat together may be a temporary dormitory where roommates don't know each other, or it may be a chance meeting on the roadside for a meal. This means that it is very likely that this line cannot be traced. If he couldn't follow the source of the murderer's information, Yu Wenshu's second thought was to follow the murderer's crime pattern. Yu Wenshu is below and has already begun arranging this work.
Relying on good health and familiarity with the construction site, he robbed cash from the construction site, etc. It can be said that the crime pattern is very consistent with the status of a fugitive.
If it is a pattern, it may be used multiple times. However, no one may have been killed before, and they may not even be seriously injured, so each locality handles it as a separate case.
However, Yu Wenshu knew very well that even if his hypothesis could be verified, the subsequent detection process would still be complicated.
The reason why a fugitive is a fugitive is that he has at least successfully escaped for a period of time. It is not easy for such criminals who are gradually adapting to the life of a fugitive to identify themselves, arrest them, etc.
If Jiang Yuan can find fingerprints, then from the perspective of detection pressure, solving the case will become a chase, and at least he will not lose 300 points on the current case.
On the other hand, chasing and escaping in this case is simpler than solving the case. He was so anxious to find Jiang Yuan, and his only idea was to block him in Changyang City.
In the case that was just announced today, it would be difficult for the murderer to handle hundreds of thousands of dollars 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 had originally been looking forward to Jiang Yuan's on-the-spot survey ability, but now he simply stopped going and stood on top to look at it, and asked, "What's wrong with this window?"
"The murderer jumped from the window." Jiang Yuan observed while
While sitting, he told Yu Wenshu what he had said before.
Yu Wenshu was shocked when he heard this: "Does this mean that you have identified the murderer's footprints?"
"Yes." Jiang Yuan nodded.
"This is a good thing. Well, send me the photo of the footprints, and I will have someone search for it immediately to see the distribution of the murderer's footprints. Yu Wenshu is also a very smart person, and he found the right way to use it immediately. Footprint method.
This time it was Jiang Yuan's turn to pat his head: "I forgot. Captain He, please send a copy to Yu Zhi."
The strategy proposed by Yu Wenshu is very useful.
Nowadays, there are a lot of footprints within the construction site. It is almost impossible to avoid leaving footprints for people entering and exiting the construction site, including the murderer.
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 we know it, the trace inspection and spot surveyors in Changyang City can find all the footprints on the construction site and see where they entered and left the construction site.
Although the value of the scene at the construction site is lower than that in the room, if the murderer's route can be determined, the case can still be greatly advanced.
If the murderer had been to the room where workers played cards, then the possibility of an internal 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 tell anything from the footprints?"
"The murderer is about 30 years old, lightweight, probably less than 130 kilograms, about 1.65 meters tall, male..."
Jiang Yuan had carefully looked at the footprints before, and he would immediately report the conclusion.
Yu Wenshu directly repeated Jiang Yuan's judgment to his subordinates. At about the same time, Wang Bo also ran back.
"I took apart a printer ink cartridge." Wang Bo put half a bottle of printer toner in the bottle, handed it to Jiang Yuan, and asked: "What now?"
"Now we just mix toner and magnetic powder, and then try to brush the display. 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 If you hold your hand up for a short time and use a lot of force, this kind of fingerprint may be missed. In fact, it is not easy to show it through brushing. "
When Jiang Yuan spoke, He Guohua nodded vigorously. There are too many fingerprints here, and no one can collect them all.
Instead, only after pointing out the special characteristics of fingerprints can the clues be connected. Only what a few people are doing now can reflect the value. Ordinary fingerprints will appear directly after the magnetic powder is applied. This kind of fingerprint is useless.
Jiang Yuan and He Guohua were like two old scumbags who gave up taking a photo after seeing the easily visible fingerprints.
After Jiang Yuan used magnetic powder and printer toner, gently picked it up with the tip of a feather brush, and brushed it on the window sill over and over again, the fingerprints that were revealed shyly were paid special attention to by the two of them. "Let me compare them first." After Jiang Yuan took the fingerprints, he started making feature points on the spot.
He Guohua began to finish.
Yu Wenshu's heart was racing, but he 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 murder case, the sentence would be heavier than an ordinary homicide case, and most of them would be executed immediately.
It is equivalent to saying that if this case is solved and the murderer is caught, the countdown to life will immediately begin.
Far away from the Ningtai River, fierce flames are billowing.
Sure enough.