Luojin City Criminal Police Detachment.
Several young criminal police officers walked in quickly and greeted Pang Jidong all the way. When they saw Pang Jidong, they also said from afar: "Good morning, Team Pangda."
Pang Jidong was like a wandering spirit, holding a cup of coffee in his hand and moving slowly. If it weren't for moving too slowly, the coffee would have spilled and burned his hand.
Several people thought that Pang Jidong hadn't heard, so they came closer and loudly said: "Good morning, Pang Pang Team."
"Ah...morning...morning." Pang Jidong raised his head and replied to several people, his expression still stiff.
Several young detectives smiled and climbed up the stairs. When they reached the third floor, they smiled at the people around them and whispered:
"What happened to the Pangda team? Their eyes are straight."
"It's a bit like the feeling I have after running five kilometers. I can't think of anything, my head can't move, and I have to wait for energy to come up."
"It's a bit like the situation I was in before the joint entrance examination. Especially when making up lessons, the teacher is staring at you while teaching. After a class, my head feels full."
"You'd better fill up only your head..."
meeting room.
After everyone arrived, the detachment leader immediately held a situation analysis meeting on the second sexual invasion.
Not counting the factors that prompted the investigation, the case that this special team was named after 110 was the most urgent case that Luojin City wanted to investigate.
Not only is the crime itself very bad, but the key point is that criminals who have not been punished are very likely to commit crimes again.
There may be many reasons for the current stop. Maybe the prisoner was hit by a car and died, maybe the prisoner got wind immediately, or maybe the prisoner was hit by a car on the way to have barbecue and was not dead at the time.
On the way to the hospital, I was hit by a car again and died in the ambulance...
But it is also possible that the prisoner just encountered something, but did not die. As the incident ends and the surrounding environment changes, he will decide to commit suicide again.
Serial rape is the same as serial murder. The murderer has more or less psychological problems. It is wishful thinking to expect him to stop automatically based on his own will or other reasons. Catch him and put him to death is the most reasonable solution.
In addition to members of the Luojin City Criminal Police Detachment, present here are Cui Xiaohu and Li Haochen from the ministries and commissions.
Forensic botany is still quite rare. Although it is useful in ministries and commissions, it is rarely used. Moreover, most of it is done by outside botanists. Unlike policemen like Jiang Yuan, who can directly do it with eucalyptus in one go.
Complete, it’s equivalent to a one-time solution.
Ministries and commissions also have high expectations for Jiang Yuan.
If this thing is done well, there will be many more cases that can be solved, and it can be solved for a very long time. Just like after the emergence of DNA technology, it became possible to detect cases in the Napoleonic era.
After a brief narration, Jiang Yuan turned on the microphone and said: "
"The regional characteristics of this site are relatively obvious. The prisoner should be very familiar with the eight sites and their surroundings, at least they have stepped on them before. Although they have been apart for a long time, they still hope to check the surveillance."
The detachment leader immediately said: "No problem, let the Fourth Brigade be in charge, Lao Pang."
"Well..." Jiang Yuan would not interfere with the leader's deployment of troops in the past, but this time he had to bear the task and said, "Wang Zhi, I have just become acquainted with Pang Pang's team, can you continue to follow Pang Pang?
The team is checking the eucalyptus."
Wang Zhi couldn't help but look over.
Pang Jidong's face was blank and his eyes were clear. He had been fed so much by Jiang Yuan in the past few days that he felt like he couldn't hold it anymore. But when it came to being mature, he didn't know if it was considered mature after his brain was burned.
Already.
"It works. If you like Lao Pang, let him continue to cooperate with you." Wang Zhi followed suit and assigned a new person to be responsible for image surveillance.
The Luojin City Bureau does not have a dedicated picture investigation team, mainly because conditions do not allow it and there is no establishment to accommodate so many technical personnel. For the time being, ordinary police are still used to do the work of picture investigation by watching the surveillance with their eyes.
In this case, it is impossible to achieve extraordinary photo-reconnaissance results.
Jiang Yuan did not pursue this either, and continued: "If everyone agrees that the prisoner lives nearby, I actually have another way to find the prisoner."
"Say." Wang Zhi looked over with surprise. He had received Jiang Yuan's report before, and he had been reading it at his desk for a long time. He didn't think of a plan to catch the person, but he didn't expect that Jiang Yuan still had it here.
Can give something.
Jiang Yuan pondered for a moment and said: "We identified the eight sites based on the spores on the four victims, mainly the spores in the clothes. But from another perspective, the spores on the victims' clothes were
In fact, the powder does not only come from the crime scene, but a smaller part comes from the perpetrator, that is, the criminal..."
Wang Zhi's eyes lit up when he heard this, and he immediately asked: "Can we find the location of the prisoner now?"
"You can delineate a rough location, but this is more complicated and there is a certain probability of error." Jiang Yuan turned to look at Pang Jidong and said: "Team Pang, if I told you before about the plan to find the prisoner, please give me
Wang Zhi, tell me."
Simple cramming education also requires questions and assessments, otherwise how can we consolidate knowledge and establish our own knowledge structure.
Pang Jidong was a little stupid. Isn't this the stage for your performance? You ask me, how did I know... Hey, I seem to really know a little bit.
Pang Jidong touched his newly grown brain and frowned suspiciously.
"Lao Pang?" Wang Zhi urged.
Pang Jidong coughed twice and said: "According to what Captain Jiang said before, it seems that we can find some pollen maps other than the pollen map. There are big pollen maps and some small pollen maps. The difference in the middle may be caused by the eucalyptus prisoners.
That’s what you mean, right?”
He turned to ask Jiang Yuan.
"It's not completely accurate, but it's okay... just understand it and use it." Jiang Yuan didn't expect Pang Jidong to master forensic botany. He only needed to use people who knew forensic botany.
From Jiang Yuan's understanding, as long as Pang Jidong can grasp the boundaries of forensic botany and know which clues forensic botany can produce and which clues are powerless, that's basically it.
Of course, Pang Jidong should also know some theoretical things, so as to determine the value of the clues. It is like there are two clues pointing to two investigation directions at the same time, one clue is brought by DNA, and the other is brought by footprints.
There is no doubt that we should follow the DNA clues, because DNA clues are much more reliable than footprint clues.
That is, DNA evidence has a higher degree of confidence.
Forensic botany is more sophisticated in terms of confidence. For example, the confidence of pollen maps is much higher, while the confidence of individual pollen will be much lower. Large amounts of pollen are different from sporadic pollen. Wind-borne pollen
The confidence level is lower than that of insect vectors and lower than that of algae...
"To be specific, how do we find the criminal suspect?" Wang Zhi couldn't listen anymore.
Pang Jidong looked at Jiang Yuan in a daze.
"Speak first." Jiang Yuan continued to give him a chance.
"What do I know...but...if it's within the area, is it possible to find Eucalyptus eucalyptus if it matches the pollen pattern of this difference?" Pang Jidong knocked on his head, feeling that something was growing inside.
Things that don't belong to you.
Wang Zhi looked at Jiang Yuan and asked, "Is it possible?"
Jiang Yuan nodded and added: "That's almost the same idea, but we have to consider that the source of the pollen on the prisoner must be more than just his home and location. In short, if you search like this, it's impossible to say that you can accurately find the only location. You have to do some investigation.
place."
"That's enough." Wang Zhi felt a lot more relaxed. He looked at Pang Jidong and said with a smile, "Old Pang is okay, I learned something."
Everyone in the conference room was familiar with Pang Jidong and nodded in approval.
"I have been following Captain Jiang recently and heard a lot of things." Pang Jidong felt a little embarrassed and said modestly, "I have learned a little bit, but not enough."
Jiang Yuan opened the system page and took a look. The task was not completed, which meant that he did not learn enough.
Following Pang Jidong's words, Jiang Yuan said: "My teaching time is too short. I happen to be partnering with the Pangda team in the past few days. I will try to spend as much time as possible."
Pang Jidong's smile changed slowly and gradually stiffened: "That's not necessary..."
It's not that he doesn't want to learn, he just thinks that cramming teaching is too cruel, and he doesn't like the feeling of being unconscious at any time.
People around me don’t need money to encourage me, so I don’t care so much, so I rush out:
"Lao Pang is awesome!"
"Lao Pang can do it. Make full use of your partner's advantages."
"From now on, the number one person in botany in Luojin City will be Pang Jidong!"
Pang Jidong quickly waved his hand and corrected: "It's none of that, I'm so old."
"It's okay. Since Pang Pang is willing to learn, I will definitely teach him well. Let's arrest him." Jiang Yuan patted Pang Jidong on the shoulder, looking familiar.
Chapter completed!