Chapter 903 The Second Inspection of the Corpse
While Song Mingguang and Wang Song made major breakthroughs, Lu Chuan also made considerable progress.
Fingerprints!
The hard work paid off, and Lu Chuan finally extracted a broken fingerprint from the pile of firewood.
“I’m so stupid!”
Zhao Zhigao felt numb when he saw it.
He has gone back and forth to this house no less than 20 times. It can be said that he basically stayed in this house for three to five days after the incident.
But he did not notice the bundles of firewood placed next to the stove.
Of course it can’t be said that he didn’t pay attention. He saw it and walked around it every time.
But he really didn’t expect that the suspect’s fingerprints might be extracted from the firewood.
"Is it possible?"
The fingerprints are very damaged.
Since the firewood itself is made of wood and is a small cylinder with an irregular surface shape, even if Lu Chuan found the fingerprint, it was already damaged after being extracted.
In Zhao Zhigao's opinion, if it were him, even if he had this fingerprint, it would probably be of little use.
The degree of damage to the fingerprints also exceeded Lu Chuan's imagination.
Judging from the completeness of this fingerprint, it is estimated that it will be good to be able to come up with two or three characteristic points. From a judicial perspective, there is a huge gap between the 15 characteristic points that can be used as judicial evidence.
But no matter what, this was extracted at the scene. It was the only key clue that might be the suspect's fingerprint. Lu Chuan wanted to study it no matter what.
Fortunately, in addition to this fingerprint, Lu Chuan also extracted some fibers from the firewood in the wing and the plum tree, as well as other trace evidence.
"If it works, let's try it when we go back. If it doesn't work, we'll talk about it later."
Originally, the Tianzhou City Criminal Investigation Detachment found nothing at this scene. This time we were able to collect some trace physical evidence, and the discovery of a broken fingerprint was already a big breakthrough.
It was already past nine o'clock in the evening when the two of them completed the second on-site inspection here.
Unfortunately, apart from a broken fingerprint found on the firewood pile in the kitchen, Lu Chuan found nothing more elsewhere.
The murderer was indeed very cautious, and the entire room he touched was cleaned very clean.
For trace evidence analysis, Lu Chuan does not intend to do it himself, but will leave it to the technical identification center.
There is a trace evidence analysis laboratory in Tianzhou City, but its technical level is average.
Of course, the technical level Lu Chuan refers to generally refers to their level of collecting trace physical evidence, not their level of technical analysis.
After handing the things over to them, Lu Chuan had to conduct a second autopsy on the body overnight.
Although there is already a lot of information obtained from Wang Jian, the forensic doctor of Tianzhou City Criminal Investigation Detachment.
The second autopsy may not yield anything.
But to be honest, if Lu Chuan didn't take a look and check it out personally, he would still be a little worried.
Anatomy room.
It had been nearly 10 hours since the body was pulled out of the refrigerator, and it was considered completely softened.
This time, Zhao Zhigao was watching for trace evidence analysis, and Wang Jian was accompanying Lu Chuan on the autopsy side.
"Team Lu, where do we start?"
Although Wang Jian is a forensic doctor, he can be said to be the most skilled forensic doctor in the province, and Haizhou City In comparison, Wang Changjiang, the forensic doctor of the Criminal Investigation Detachment, is actually a step ahead. But Wang Jian admired Lu Chuan's forensic abilities very much, especially knowing that Lu Chuan was definitely one of the best in the province in terms of skeletal identification.
This time, Lu Chuan actually did not conduct a comprehensive examination according to the forensic autopsy procedure, but wanted to find out if there were any special clues.
"Let's check the surface."
The body was unclothed when it was found.
Lu Chuan had just discovered some ashes of chemical fibers that had not been completely burned in the kitchen pond at the scene of the crime.
Since the criminal suspect did not want to hide the victim's identity, it is possible that the other party's behavior of burning the victim's clothes was to fuel the fire.
Of course, because there are blood stains on the clothes, it is most likely to hide some traces.
But Lu Chuan already had some judgments about some physical characteristics of the criminal suspect, but it was not particularly accurate.
When the body was discovered, it was curled up in the iron pot. Because it could not be stretched out, and the cooking time was too long, a lot of the skin had melted and stuck together.
After Wang Jian made a basic identification of the cause and time of death of the corpse, he did not actually perform a complete autopsy on the corpse.
Because the meat is already cooked and breaks into pieces when touched, it is still very different from the dissection of ordinary corpses.
And this time it was frozen, and even more so after thawing.
What Lu Chuan focused on was the knife wound on the neck of the deceased. As Wang Jian said, there were traces of repeated cuts on the knife, which meant that the suspect did not know the structure of the human body very well. Even looking for the neck Things like arteries have to be tested.
In addition, the suspect should have opened the chest of the deceased with his bare hands and pulled out the heart.
Judging from the wounds where the organs were broken, they should have been torn off forcefully, and there were no traces of cutting with a sharp weapon.
After that, Lu Chuan focused on observing the traces of the hands and feet being tied on Wang Jingya's body.
“We extracted some fibrous material from the ankle and after testing, we found that it was a nylon rope. However, we did not find the nylon rope at the scene. It should have been burned.”
Wang Jian was explaining the work that his side had done.
Lu Chuan nodded.
“Can the time be determined?”
Wang Yan knew that Lu Chuan meant to ask whether this trace could be used to determine how long Wang Jingya had been tied up before her death.
“About ten hours.”
This is an empirical judgment based on the color depth of the bondage marks.
This is Wang Jian’s judgment and Lu Chuan agrees. Lu Chuan observed that the focus shifted to the position of the hands, feet and head.
It was Lu Chuan who first suggested that Wangjiagou Village in Beiwang Town was not the scene of the first crime. The main reason was that there was no blood spray at the scene.
After this autopsy, Lu Chuan's speculation was taken more seriously.
Over at the scene, Lu Chuan had conducted a detailed inspection and determined that there was no blood spray point.
And Lu Chuan found no traces of bumps on the deceased’s hands, feet, and scalp.
So judging from this point, if the murderer bled the deceased directly on the stove, that is, in the iron pot, and then steamed the body, this possibility is basically unlikely.
The reason is that although the victim was protected and could not effectively resist, she was still able to squirm. During the process of being killed, there were even some violent actions, which caused friction between her hands and feet and the iron pot. .
But Lu Chuan didn't find any injuries on the deceased's hands and feet.
(End of this chapter)