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I put Zhang Yunfu¡¯s interview materials and last night¡¯s experimental results on the table in the conference room.
¡°Brother Lei, help me put down the projector!¡±
While the white projection cloth slowly descended, I inserted the beige USB flash drive into the laptop. After everything was in place, I signaled Brother Ming to start.
Brother Ming threw four cigarettes out of the cigarette case.
"Guoxian, is there anything going on there?" Brother Ming tapped the butt of his cigarette on the table.
¡°There was only blood stains and one kind of biological test material in the house, and the DNA information left behind all belonged to the deceased Li Fang, and nothing else was found.¡±
"Jiao Lei, do you have any here?"
Fat Lei said nothing, holding a cigarette in his mouth and shaking his head helplessly.
"Then let me tell you!" Brother Ming opened the notebook, "The deceased suffered a sharp-piercing wound to the heart and was killed with one knife. Judging from the wound, the crime knife should be about 20 centimeters in length and has a sharp edge. It is suspected to be a military stab or a hidden knife. Single-edged knives such as knives, but the possibility of homemade knives is not ruled out.¡±
"Based on the body spots and the degree of digestion of the stomach contents, the time of death was ten hours before the incident, that is, around 1 o'clock that night. The deceased's hands had touched the murder weapon many times before he was killed, and it is suspected that there had been a dispute between the two parties. I currently have That's all. Ye Qian, please introduce the investigation status of the criminal police team to everyone."
"A yellow dog was fed at the deceased's home. According to reports from surrounding neighbors, no dog barking was heard during the time of the crime, so we suspect that the suspect was familiar with the deceased or often went to the deceased's home. The whereabouts of the deceased's son Zhang Qingsheng are currently unknown. Others There is no progress at the moment.¡±
After Ye Qian finished speaking, everyone in the conference room focused their attention on me.
I put the information in front of me in order, then clicked on the "Zhangwei Village Murder Case" folder on my computer and said, "After investigation, I extracted a total of two types of trace evidence at the crime scene: shoe prints and parallel fingerprints. .¡±
"Parallel fingerprints?"
"Yes." As I said that, I clicked on the photo on my laptop, and the enlarged version of the photo was clearly displayed on the projector.
¡°There aren¡¯t even any lines, what can be analyzed from this?¡± Fat Lei was a little disappointed.
"Jiao Lei, don't interrupt!" Brother Ming knocked on the table, "Xiaolong, go on!"
"The parallel fingerprints in this photo are dust-reduced fingerprints left by the juxtaposition of the index, middle and ring fingers. We all know that the growth of human hands basically stops around the age of 23, when stable features can be formed. The edges of this fingerprint are thick, and when magnified 50 times, you can see dense burrs, which reflects that the finger skin lines are deeper and are left by men. Last night, I extracted the above sample from a large number of inspection samples. Thousand Fingerprints were measured and the following conclusion was reached: "
"The parallel width of the food, middle and ring fingers of a 14-year-old male is 4.5 cm, that of a 16-year-old male is 5 cm, that of an 18-year-old male is 5.5 cm, that of a 25-year-old male is 6 cm, that of a 35-year-old male is 6.5 cm, and that of a 45-year-old male 7 cm 3. The width of the parallel fingerprint we extracted at the scene is 6.2 cm. Based on this data, I can infer that this person is about 35 years old, and the actual value is lower than the average, indicating that his diet, , The ring finger is slightly narrow, and it is suspected that he is thin."
"How accurate can it be?" Brother Ming asked cautiously.
"If we just look at this, half and half, we need to analyze it in conjunction with the footprints extracted on site."
"Okay, go on."
"Based on the results of the criminal police investigation and interview provided by Ye Qian, I personally prefer that an acquaintance committed the crime. Excluding interfering footprints, there is only one kind of shoe print at the scene, which should be the suspect's shoe print." I then double-clicked the mouse to bring up the first scene at the scene. Shoe prints clicked into the projector.
"Because all the conditions in this case fall on the footprints, I made a detailed analysis. First of all, the number of entries and exits. According to the age of the shoe prints, the suspect has been to the deceased's residence more than once. This is also the case. At the time of the incident, the yellow dog in the yard had no reason to bark."
"I found the shoe prints of a minor outside the yard at the crime scene. As expected, these should have been left by the missing son of the deceased, Zhang Qingsheng. The strange thing is that all the shoe prints of Zhang Qingsheng are old, and they are also old. That is to say, he had not returned home for at least three days before the incident, and he did not disappear on the day of the incident."
"According to what you say, Zhang Qingsheng's disappearance is really related to the suspect? He was probably taken away by the suspect?" Ye Qian couldn't help but ask.
"You are right, because there are a series of shoe prints left by the suspect and Zhang Qingsheng in the yard, and the two shoe prints are new.It is of similar age and is accompanied by shoe prints. "
"A companion shoe print?"
"The shoe prints of the two people appeared at the same time and in a straight line. In other words, they walked out of the door side by side!"
"Are you sure?"
"This is certain!"
Brother Ming frowned and fell into thinking.
¡°As of now, there are too many unexplainable things at the scene, and none of us can accurately restore the true situation of the case.
¡°Huh!¡± Brother Ming exhaled a puff of thick smoke and motioned for me to continue.
I then clicked on the next photo: "This is a set of shoe prints extracted from the yard of the crime scene. The first step is to find out whether it has the possibility of disguising shoe prints. We all know that general shoe prints There are two situations of disguise: big feet wearing small shoes and small feet wearing big shoes.¡±
"When the foot is too big and the shoe is too small, the foot is bound and squeezed by the shoe. The toe joints will become shorter, the toe belly will become larger, and the space between the toes will become narrower and move closer to the middle toe. This is because the gravity is concentrated on the edge of the shoe, so that the foot is stepped on. The pattern in the middle of the shoe prints that came out was empty.¡±
¡°When the foot is small and the shoe is big, the foot can move left and right, front and back in the shoe, and gravity is concentrated in the middle part of the shoe. The pattern in the middle part of the shoe print will be affected by gravity and become clear.¡±
"We see that the set of shoe prints at the crime scene, whether from the edge marks or the central pattern, show no signs of disguise, so the shoes worn by the suspect fit well."
"Is this related to the case?" Ye Qian was a little confused.
"This is a premise, I will talk about it later." (Remember the website address: www.hlnovel.com - Didn't finish reading? Add this book to your favoritesI'm a member and bookmarked this chapterCopy the address of this book and recommend it to your friends for pointsChapter error? Click here to report
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