Criminal Investigation Detachment No. 1 Conference Room. Liu Guodong is reporting on the current survey and inspection.
"First, regarding the identification of the first deceased, there is still no result in comparing fingerprints and DNA information."
"Yesterday afternoon, we extracted trace evidence from the first corpse. This morning the items were sent to the provincial technical appraisal center. The results will be available tomorrow."
"Have you found anything during the physical evidence investigation around the scene?" The investigation around the scene is a fixed process that must be carried out in every murder case.
The murderer is likely to leave behind his own skin flakes, hair or other physical evidence during the murder.
Liu Guodong shook his head: "We collected a total of 126 pieces of evidence around the scene yesterday, and we have collected fingerprints and DNA samples from all of them."
"Lu Chuan is comparing the collected fingerprints, and there are no major findings yet."
"After the incident occurred this morning, we conducted another detailed survey of one kilometer around the scene, and this time collected 36 pieces of physical evidence."
"Most of these physical evidences should have been added from yesterday afternoon to now, and we will try to complete them today." The current investigation is not a sweep. There will always be some omissions in a large-scale investigation.
"There are also footprints we found on the perimeter of the wall, which are the results of footprint analysis."
"Oh? Has it been completed?" Qin Yong took the footprint analysis report handed over by Liu Guodong with some surprise.
Liu Guodong nodded: "After Xiao Lu came back, he analyzed the footprints as soon as possible."
"The suspect is an adult male, 1.84 meters tall, weighs about 100 kilograms, and is between thirty-five and forty years old." Compared with yesterday, Lu Chuan and others analyzed the height of the suspect based on the height of the fence. For Miba and above, the conclusions drawn through shoe print analysis are more precise this time.
"The wear on the outer edge of the suspect's footprint is more severe than the inner edge, but the extent is not large, indicating that the suspect has a weak splayed leg shape." In fact, most people have some flaws in their body shape.
For example, slight splaying, splaying or genu varus are common bow legs. The formation of these leg shapes is influenced by both genetic genes and acquired development.
For example, calcium deficiency, irregular walking, etc., can cause minor bone deformities in the lower limbs. The judgment of each person's leg shape can be concluded by analyzing the wear and tear of shoes worn for a long time.
The information at the current survey office is still being sorted out, and Liu Guodong's report is temporarily over. Qin Yong looked at Wang Changjiang, who coughed lightly.
Lao Wang had a good rest yesterday. Because the frozen corpse had not softened, an autopsy could not be performed for the time being: "The first corpse has been thawed, and the autopsy can be performed later."
"As for the second corpse..." Wang Changjiang paused: "An adult woman, similar in age to the first corpse, should be between twenty and twenty-five years old."
"The cause of death was mechanical asphyxiation. Judging from the size and shape of the pinch marks on the neck, the murderer of the first corpse should be the same person." Liu Guodong nodded, which was also confirmed by him.
The locations of the pinch marks on the necks of the two corpses were similar, and it was inferred that the size of the murderer's hands was basically the same.
Moreover, the other party wore gloves when strangling the victim. Lu Chuan didn't find any fingerprints on his neck.
"The body had no injuries during life, and no traces of being insulted before or after death were found." The blood stains on the snow were caused by the murderer's body scratching the wall and damaging the skin during the process of dumping the body.
From the shape, size and friction marks of the wound, compared with the residual blood stains on the fence, it can be determined that it was left after death.
The scars left when a person is alive are different from the scars left after death. Because the human body is active and the blood is circulating, there will be obvious defense responses when injured during life, which is academically called life response.
This defense response not only refers to the active defense of the injured person, but also refers to the body activity response of the injured part.
Such as bleeding, coagulation, muscle twitching, cell division during the healing process, etc. Among Lu Chuan's system rewards, in forensic pathology, there is a skill card for the identification and analysis of antemortem and postmortem injuries.
"We will conduct an autopsy on the first corpse later, and a report will be issued in the evening. The second corpse will have to wait for the autopsy tomorrow."... Existing Investigation Office.
Lu Chuan, who had completed the shoe print analysis, was comparing the fingerprints found on the physical evidence collected from around the crime scene yesterday.
Advanced fingerprint identification and analysis skills allow Lu Chuan to advance very quickly when dealing with this level of fingerprint comparison.
It only takes about three to five minutes to process a fingerprint. After returning from the scene and analyzing the footprints, Lu Chuan has completed half of the work.
Yang Sen and Lao Bai were processing the physical evidence brought back from the scene this morning.
"What did the murderer think of dumping the body twice in one place?" Lao Bai has been a criminal policeman all his life and has never seen any cases.
Twenty years ago, in the series of murders on rainy nights, the murderer specifically targeted young women in red clothes riding bicycles.
That year, seven people were killed, causing panic throughout Haizhou City. In the end, no woman even dared to wear red clothes, let alone going out on a rainy day.
Seventeen years ago, in the corpse mutilation case in the southern suburbs, the murderer killed four people at the same time. A family of four was wiped out. All the corpses were minced, put into woven bags and thrown into sewers, trash cans, and septic tanks.
There were twelve bags in total, one of which Lao Bai took with him for investigation, containing four left legs. The poisoning case twelve years ago, the arson case eight years ago... Lao Bai's experience fully illustrates what it means to live for a long time.
But this time, the murderer dumped his corpses in succession at the same place, which was the first time Lao Bai saw him. Yang Sen scanned his fingerprints and shook his head: "The murderer most likely has a deeper reason for doing this."
"Either he is mentally perverted, has obsessive-compulsive disorder, or has some other reason that forces him to do this."
"Normal people...can't do this." Didi! While the two were chatting, the DNA testing equipment nearby made a buzzing sound.
Yang Sen looked back and said, "The DNA test results of the second corpse are out. I'm going to run around on the computer." Lu Chuan had already collected the fingerprints of the second corpse at the dumping site.
After returning to the office, I conducted identification and analysis immediately, but it was a pity. As with the first body found yesterday, the fingerprint comparison was unsuccessful.
There is no target person in the fingerprint system of Haizhou City Criminal Investigation Detachment. The face comparison is in the missing door library, and there is no corresponding information.
It stands to reason that in this case, if DNA information is collected for comparison, there is a high probability that there will be no chance of success.
Because of the DNA information database of the Haizhou City Criminal Investigation Detachment, 90% of its owners have been fingerprinted.
The fingerprints were not matched, and the possibility of successful DNA information comparison was not very high. However, the existence of the criminal investigation process must have its reasons.
Ding! Yang Sen had just entered the DNA information of the second corpse into the system and started comparing it. Before he could turn around, the computer sounded a notification that the comparison was successful!
