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Reasonable division of labor represents high efficiency. After dinner, the first case meeting was held on time.
Brother Ming first introduced: "The stomach contents of the deceased were nearly empty, and there were fried dough sticks in the residue. He should have been killed within 4 hours after breakfast. Based on the condition of the body spots and blood coagulation, the specific time of death of the deceased was 1 Around 11 o'clock on the 14th.
"Except for blunt force injuries to the head and sharp force injuries to the neck, the body surface of the deceased showed no resistance or coercion injuries. Guoxian, were any poisons or hallucinogens detected in the stomach contents of the deceased?"
"No."
Brother Ming nodded and continued: "The sharp wound of the deceased was located in the middle and upper part of the Adam's apple. During the crime, the suspect may have controlled the deceased's head first, and then killed him with a knife."
"Control the deceased's head?"
"Yes. Unless the deceased is voluntary, people will have an instinctive reaction to shrink their necks when the suspect commits a crime. This is just like cold weather. Many people like to press their chins down to reduce exposure of skin. Now it is outdoor The temperature is minus 5 degrees Celsius, and metal has strong thermal conductivity. The suspect put the knife on the deceased's neck. Even if the deceased was not timid, the temperature difference would make him instinctively shrink his neck. In this way, the suspect's position where he cut the knife would be It will be lower, not as much above the Adam's apple as it is now. To cut the wound like this, the deceased must be allowed to raise his neck."
"Brother Ming, could it be that the suspect suddenly killed the deceased without him reacting?"
"No, the wound is very deep. Above the deceased's Adam's apple, multiple 'Z'-shaped knife test marks can be found. In other words, the knife used by the suspect has touched the deceased's neck more than once."
"Brother Xian, did you find any hair of the deceased on the ground at the scene?"
"No."
¡°Xiaolong, what¡¯s the problem?¡±
"Brother Ming, do you have anything else to say?"
"Not yet."
"How about I talk about my situation first?"
"OK, alright."
¡°Let me talk about fingerprints first.
"After scanning, the suspect's fingerprints were found on three objects at the scene. The first one was the one I found first, on the drawer in the bedroom. What was left on it were three parallel fingerprint lines, and the three fingerprints were not arranged in an order. On a straight line, from left to right are bucket-shaped lines, skip-shaped lines, and bucket-shaped lines. The main reason for the difference in the height of the lines is the difference in finger length. Except for special circumstances, the finger length rules of most adults should be The thumb is the shortest, followed by the little finger, the index finger, the ring finger, and the middle finger.
"The drawer at the scene was opened in this way: the suspect used his fingers to open it, and his parallel fingers came into contact with the rectangular paint layer at the bottom of the drawer, leaving three incomplete fingerprints. The leftmost fingerprint was relatively clear, and the middle fingerprint was seriously incomplete. The fingerprint on the far right is also relatively clear. With the lines and the order of height, the rest is to analyze the distribution pattern of the fingerprint on the five fingers.
"Thumbprint: The area is the largest among the five fingers, and the lines are the thickest. The front impression is narrow at the top, wide at the bottom, rounded at the top and bottom, wide in the middle, and arc-shaped on both sides. The center of the pattern is mostly located in the middle and lower parts of the print, on the fingertips The lines and triangles are relatively far from the center of the pattern. The side impressions are mostly narrow at the top, wide at the bottom, pointed at the top and rounded at the bottom, in the shape of a semi-cone, with one side curved and the other side obliquely straight. The pattern often appears in the shape of a bucket, most of which are circular. Bucket, spiral bucket.
"Index finger print: The area is in the middle of the five fingers. The front print is pointed at the top and rounded at the bottom. There are often missing corners on the inside of the fingertip. The center of the pattern is mostly located in the upper inner area of ??the print, and the fingertip line is closer to the center. The side print is pointed and round. The diagonal strips on the top often appear symmetrically with thumb prints in the field. Bucket-shaped patterns are often seen in the pattern, and most of them are spiral-shaped buckets, but the occurrence rate of reverse dustpan and reverse spiral is the highest among the five fingers.
"Middle finger print: Its area is similar to that of the index finger. The upper part of the front impression is a circle and the lower part is approximately rectangular. The fingertip lines are closer to the center, and side impressions rarely appear in the field. The shape of the print often appears like a skip-shaped pattern.
"Ring fingerprint: Its area is the same as that of the middle finger. The front impression is mostly an oblong shape with a wide top and narrow bottom. The head tends to be inward. The fingertip lines are far away from the center of the pattern. Side impressions rarely appear in the scene. Pattern shape Bucket-shaped patterns often appear, and most of them are ring-shaped buckets and spiral-shaped buckets.
"Little fingerprint: The area is the smallest among the five fingers, and the lines are the most dense. The front impression is a long strip with a rounded top, and the center of the pattern is mostly skewed to the inside. The left little finger leaves more lines on the left side of the center pattern, and the right little finger leaves more lines. There are many lines on the right side of the center pattern at the bottom. It rarely appears alone in the scene. The pattern is mostly a dustpan pattern, and the reverse dustpan is the least among the five fingers.
"Combining the above two points, I can judgeStation number, shift, production date, sales area, and with the steel code, all this information can be queried from the tobacco department. "
"Okay, I'll give the steel code to Ye Qian later and ask the brothers from the criminal police team to contact the Tobacco Bureau."
"No problem, Director Leng."
¡°That¡¯s all I¡¯ve discovered so far.¡±
"Jiao Lei, do you have any at your place?"
"There is not a single working camera in the entire Nanling community, and I haven't found any yet."
"Guoxian, please tell me."
Lao Xian said "hmm" and pulled out the inspection report: "I extracted five inspection materials indoors.
"The first type is blood stains. The DNA of the deceased was detected.
"The second type is a white towel. I detected saliva spots on the towel. This towel should have been used by the suspect to block the mouth of the deceased. The towel is made of coarse cotton fiber and is very cheap. It costs at most 3 yuan a piece. .The distribution volume is very large, without any directionality.
"The third type is cigarette butts with teeth marks. There are 10 of these cigarette butts, and the DNA of the deceased was detected in all of them.
"The fourth type is cylindrical cigarette butts. There are 8 of these cigarette butts in total, but no results were detected."
Hearing this result, I was completely puzzled: "What does it mean that no results were detected?"
"The suspect has a special smoking habit." Lao Xian said, opening a picture, "This is a photo of the physical evidence I took before starting the examination. They are all unburned cigarette parts. There are 8 in total, and The number of cylindrical cigarette butts just matched."
"You can see obvious traces of saliva on these eight cigarette butts, and I also extracted male DNA from them, which shows that the suspect is used to pinching off cigarette butts when smoking."
"Pinch off the cigarette butts? What kind of habit is this?"
Brother Ming took my words: "So, the suspect should be quite young, probably over 40 years old."
"Can this habit infer age?"
"Well." Brother Ming took out a cigarette, "In the early years, because our country could not keep up with the technology, the cigarettes produced were basically without filters. It was not until the 1980s that filter cigarettes gradually became popular. Our country's tobacco department in order to promote Based on the concept that 'smoking is harmful to health', filter-free cigarettes were basically no longer produced in the 1990s.
"The suspect has the habit of pinching off the filter tips, indicating that he may be addicted to smoking unfiltered cigarettes. If we assume that he started smoking at the age of 16, then he should also be born in the 1970s. Based on this calculation, he is at least 30 years old. 40 years old.¡±
Hearing this, Fat Lei gave a thumbs up: "I'm really convinced by you, this is fine!"
Brother Ming didn¡¯t take it seriously: ¡°Ye Qian, what else do you want to say?¡±
"The peripheral visits to the deceased are still continuing, and no clues have been fed back. In addition, the deceased's son Zhu Shaobing was mentally stimulated and is still awake in the hospital. After his mood stabilizes, an interview transcript needs to be made for him. .¡±
¡°Okay, there are a few problems we need to solve next.
"We have now determined that the suspect's left hand is disabled. He carried a large number of tools when he committed the crime. It is very likely that he carried backpacks, handbags and other containers with him. Jiao Lei, take a look at the community based on the time of death of the deceased. Are there any people around who match the characteristics?¡±
"clear."
"Xiaolong, we must seize the time in the investigation experiment. We must determine whether the suspect is a prosthetic limb carrier, and we must restore the suspect's walking posture based on his walking characteristics. If the walking posture is different from ordinary people, we will contact you Brother Lei as soon as possible. .¡±
"receive."
"Ye Qian, your criminal police team needs to continue visiting to see if there are any relevant people in the circle of the deceased who meet the characteristics; regarding the steel code of the cigarette box, please contact the Tobacco Bureau as soon as possible."
"Um."
"Also, the deceased's son will inform me when he wakes up, and I will ask him personally."
"Understood." (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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