At eight o'clock the next day, in the No. 2 conference room of the Criminal Investigation Detachment, the criminal policemen who participated in the investigation and handling of the murder case dragged their tired bodies and walked into it with their red eyes open, and found a place to sit at random.
At ten o'clock at eight, Yu Chen walked into the conference room, looked around, frowned and asked, "What about Old Yuan?"
"Team Yuan said he was on his way over."
A criminal police officer immediately got up and answered.
"Oh" Yu Chen nodded, walked to the edge of the pursuit position, picked up the mineral water on the table, unscrewed it and drank two sips, and said, "Don't wait for him first, just have a meeting" As soon as the words fell, Yuan Youchong walked into the conference room with three criminal policemen.
All four of them had a large patch of wet clothes, and their hair was dripping from each other, so they didn't have time to wipe it.
In fact, more than half of the criminal police officers in the conference room had wet hair, and they were drenched in soup by the torrential rain, and after returning to the detachment, they only had time to change their clothes and wipe their hair casually before rushing to the conference room.
Well, due to the particularity of the work of the criminal police, not to mention the duty system, when encountering a major case, they often eat and live in the detachment, so all criminal police officers will leave two sets of clothes and toiletries in the detachment.
"Sorry for being late."
Yuan Youchong said as he walked towards Yu Chen.
"It's fine."
Yu Chen shook his head, and after they were also seated separately, he asked, "Why are you just a few of the rest?"
"I let them go back to rest."
Yuan Youchong shook his head: "According to your request, we will be divided into four groups, and we will take one group of four people, and we will be able to search the Yaping Xinyuan community at dawn."
After a busy night, everyone was quite tired, so I asked them to report to their team leader and then go back to rest. ” "In addition, when I came over, another team of criminal police officers came to take over the work."
"Well, I know, I sent it."
Yu Chen waved his hand: "Do you want me to help me bring a few towels over to wipe you?"
"No, no, just go take a shower after the meeting, and there is no wind in the conference room, so it's not in the way."
"Oh."
Seeing his performance, Yu Chen knew that he had come out of negative emotions such as self-blame, remorse, and powerlessness, and couldn't help but breathe a sigh of relief.
He is the absolute main force in handling cases, and he can't keep his head down.
"Now, everyone is here."
Yu Chen checked the multimedia equipment, and when he saw that everything was normal, he said, "Let's have a meeting, Xiao Zhou, let's talk about the autopsy results first." ” "Basically, there is no deviation from the conclusion of the autopsy at the scene."
Zhou Qianxin stood up and said: "There is no new discovery, and if you insist on saying it, it can only be a supplement to the murder weapon." ” "Tell me about it."
"Hmm."
She walked to the computer, inserted her USB flash drive, opened a folder, and put out a few photos on the projector, saying: "Let's see, this is a partial photo of the two victims' waist cuts, and you can clearly see the pathological changes of the wound." ” "I don't want to see it," Yu Chen complained in his heart, but he still raised his head and stared at the slide for a while.
But he was too layman in forensic science to understand the doorway, so he asked: "What does this mean?"
These words also asked the hearts of most of the criminal police officers present.
"Uh, my pot, I was busy all night, I forgot you guys couldn't read these pictures."
Zhou Qianxin stretched out her hand to support her forehead and explained: "I counted and compared in detail the slash wounds and skin flaps on the severed sides of the waists of the two victims, as well as the cut marks and bone gaps on the lumbar vertebrae, and it can basically be determined that the murder weapon was the same machete, which is presumed to be a bone chopper with a certain thickness and weight, and the blade length is about 23 cm to 265 cm."
"That's pretty much it.
Everything else has been said on the spot, and that's pretty much it. ” "Okay."
Yu Chen hurriedly wrote down this information, and after Zhou Qianxin sat down, he looked at Cheng Wei: "What did the trace examination department find here?"
"There are two new discoveries."
Cheng Wei stood up, also walked to the side of the multimedia equipment, inserted the USB flash drive to open the photo, and said: "First of all, on the flower garden where Lu Yuping was killed, we found a few cotton wool fibers, you can take a look. ” The detectives looked at the projector.
The photo is taken of a meadow, and at first glance there is nothing.
Immediately afterwards, Cheng Wei switched a few local macro high-definition pictures, and everyone found that there were several extremely fine cotton fibers mixed between the blades of grass.
"So fine" Yu Chen was surprised.
He also knew that the trace examination department must have been lying on the ground with a flashlight, crawling inch by inch like a dog to inspect the scene, so he could find such a subtle clue, so he immediately said: "Thank you for your hard work." ” "Nope."
Cheng Wei shook his head: "The technical team has already tested it, and it is an ordinary absorbent cotton cotton fiber."
What it represents at the scene is still uncertain, but it can only be said that it may have fallen off the murderer's body. ” "Also, I hung it with a rope and carefully examined the shoe prints on the peripheral pipes, and found a strange feature, you can take a look."
As he spoke, he opened a few photos of shoe prints, mainly a few bloody shoe prints, the shoe prints were complete, but the blood-colored parts were a little strange, the front and back were lighter, and the middle was thicker.
After everyone looked at it for a while, he said: "Generally speaking, climbing peripheral pipes, either with the toes supporting the pipes, or with the balls of the feet against the pipes, or with both feet turned out, stepping on the pipes with the soles of the feet or heels, these are nothing more than these three ways. ” "The murderer's method belongs to the second type, with the sole of the foot against the pipe as a support, so that the shoe print is relatively intact.
However, everyone has also seen that the blood marks in the middle of the shoe print are very obvious, the color is darker, and the toe and heel are lighter. ” "Judging from the shape of the pattern and the division, the murderer was wearing flat running shoes or flat sneakers, only the toe and the end of the heel have an upward arc, and the bottom itself is close to a plane."
"Therefore, it is easy to rule out the influence of the curvature of the sole and the structure of the sole, and then it can be judged that the support point of the murderer's foot is actually in the center of the foot."
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"This is too strange, unless the feet are flat, the human foot should be in an arch shape, the center of the foot is concave, how can it be possible to use the palm of the force when the whole ball of the foot is close to the object being touched" "To put it simply, you can experiment by yourself, stand up and take two steps, and see if it is possible to support your body with the soles of your feet, leaving a deep and shallow footprint in the middle."
Yuan Youchong stared at the photo of the shoe prints on the projection, thought for a moment, and said, "You mean, there may be some kind of lesion on the murderer's foot, such as flat feet, or simply protruding on the palm of the foot."
"Well, at least that's the only explanation I can think of."
Yuan Youchong looked at Zhou Qianxin.
She understood, stood up and said, "The so-called flat feet are the absence of the normal arch of the foot, or the collapse of the arch of the foot.
Patients with flat feet may indeed protrude from the heel and plantar region.
In addition, individual specific deformed feet may also leave these footprints. ” "Understood."
Yu Chen bowed his head: "This is another important clue Well, Lao Gu, what did you and the detective find?"
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