After sealing off the scene, it was already past nine o'clock in the evening when everyone returned to the criminal investigation detachment.
The investigators and forensic doctors must not be able to rest, and they have to issue the report overnight.
The action team launched an investigation into the identity and background of the victim.
At this time, there was no talk of sleeping or not sleeping, and the entire criminal investigation detachment became busy.
The progress on the forensic side is actually relatively fast.
When the body was discovered, although it was a little bloody on the surface, it was just the same after it was placed on the autopsy table.
Wang Changjiang and Shen Yan successively opened three chambers according to the normal anatomical sequence, and then conducted toxicological and pathological experiments on the internal organs.
Nothing special found.
The cause of death was determined to be death caused by hemorrhagic shock.
Of course this is a more civilized expression.
To put it bluntly, the deceased was skinned and bled to death by the murderer.
Lu Chuan had been cooperating with Wang Changjiang and Shen Yan in the early stages of the autopsy.
What he focused on were the marks of skin cuts on the body and the angle at which the murderer entered the knife.
The murderer cut the skin of the entire chest and limbs from top to bottom and from left to right when handling the skin of the deceased.
With Lu Chuan’s current level of survey, he could probably determine where the opponent was standing.
Through data calculation, we can roughly get the height range of the other party.
Soon, the night finally passed with all parties busy.
Nine thirty the next morning, conference room No. 1.
Everyone held a case analysis meeting with panda eyes and yawning.
First of all, Wang Changjiang represented the forensic doctor to make an autopsy report.
"The deceased was a male, 1.7 meters tall, aged between 43 and 46 years old."
"The cause of death was hemorrhagic shock. The time of death was around 3:00 noon the day before yesterday, which was 3:00 pm on the 22nd. "
"We did not find any intoxicating substances or narcotic substances in the remaining blood."
"The murderer skinned the victim while he was very conscious. Torture.”
Wang Changjiang’s report was very brief, and the autopsy did not yield much information.
"Where's the current survey?"
Qin Yong's eyes turned to Lu Chuan.
“The murderer was very cautious and cleaned up most of his remaining traces at the scene.”
“The murderer had treated the warehouse floor with a mop, and there were no fingerprints on it. The murderer was committing the crime. Wearing gloves at the time.”
“In addition, the murderer had a very strong sense of counter-reconnaissance. The murderer used a broom in the yard on the cement road to clean up the marks left by the wheels, and finally threw the broom on the cement road. The connection with the main road ”
"We conducted a very detailed inspection of the scene last night and found some hair and skin flakes, but after testing, they all belonged to the victim. The murderer should have worn protective clothing or used necessary means to prevent his own flakes. Or the hair fell off at the scene. "
Lu Chuan didn't sleep last night, and Lao Bai and Yang Sen didn't rest either because they were conducting trace evidence analysis on the substances collected at the scene.
But unfortunately, the murderer did not leave any clues.
Of course, this is not found in actual operations.
But in theory, since the murderer had been at the scene, it was impossible not to leave any traces.
It's just that on the one hand, the murderer has cleaned up these traces, and on the other hand, even the current trace evidence analysis has not found much information that can identify clues to the murderer.
But Lu Chuan’s on-site investigation was not without any gains.
“We found some soil on the mop.”
“After analyzing and identifying the soil, we found that it was not the same as the soil in Xishan, but that there was some sea sand in it. "Haisha?"
"Although the amount is relatively small, it does exist, and we checked the victim's shoes and found no traces of sea sand."
"So the sea sand may have been brought to the scene by the murderer. "
Haisha...
This is also a clue.
At least it can be said that the murderer seems to have been active on the beach.
But with just some sea sand, it is impossible to identify the murderer's identity or other important information.
“Any other discoveries?”
Lu Chuan nodded and turned on the projector.
Yang Sen and Lao Bai were doing trace evidence analysis and other tests last night.
Lu Chuan has been doing some calculations and analysis based on the data collected from the knife marks on the corpse's skin.
"Look, these are the knife marks on the skin of some victims that I collected."
"On the one hand, you can see that these cuts are of different lengths and depths, and there are damages in some places."
"This shows that the opponent is not a seasoned criminal, but a novice."
"And everyone, look at these positions."
What Lu Chuan showed to everyone was the neck, wrists and legs. Knife wounds.
"These are the places where the murderer skinned the skin, the starting point of the knife operation."
"In fact, there are some rubbing marks and irregular scratches at the knife point."
"This should be the murderer's skin. It was caused by insufficient strength and shaking hands when applying the knife. "
"I think from these marks, the murderer himself was relatively scared when he hurt the victim."
Everyone was listening quietly to Lu Chuan's analysis.
Although these details may not seem to be helpful in solving the case, in fact, through these subtle traces, we can infer the murderer's psychology and behavior at the time.
“So I boldly speculate that this is most likely the murderer’s first murder.”
“But the scene of the other party’s first murder was handled very well.”
"The murderer was meticulous and very cautious. He left no footprints, fingerprints, hair, or dander at the scene. He even knew to remove the tire marks from his own car."
"So I guess , The other party is not very old, but has a good education and a high degree of education.”
In fact, Lu Chuan still had something to say. Based on criminal psychology, there is a high probability that the other party is an extrovert.
Lu Chuan even guessed that there was no direct conflict between the man and the victim.
The murderer probably had other special reasons for targeting the victim.
It seemed to Lu Chuan that the other party killed someone, most likely to attract the attention of the police.
Of course, some special circumstances, such as being coerced, are not excluded.
Of course, these were just Lu Chuan's guesses and had no basis, so he did not say them out when reporting.
“Finally, based on the angles and force of these knife marks, I probably did some data model analysis.”
Applying mathematical models to draw conclusions from on-site surveys is Lu Chuan’s strength.
"The murderer is between 1.75 and 1.8 meters tall, and is most likely a young male."
Lu Chuan has a relatively strong basis for making this judgment.
Of course, there was no need to mention the height. Lu Chuan calculated it based on the height of the victim and the angle of the wound. (End of this chapter)