Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

Chapter 903 Second Examination of the Corpse

While Song Mingguang and Wang Song made significant breakthroughs, Lu Chuan also made considerable progress.

fingerprint!

Hard work pays off, and Lu Chuan finally extracted a broken fingerprint from the pile of firewood.

"My grass!"

Zhao Zhigao was numb from watching it.

He went in and out of this room no less than 20 times. It can be said that he basically stayed in this room 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 cannot be said that he did not notice it. He saw it and walked around it every time.

But he never thought that it was possible to extract the suspect's fingerprints from the firewood.

"Can it be done?"

The fingerprints are very broken.

Since firewood itself is made of wood and is a small cylinder with an irregular surface shape, even if Lu Chuan found this fingerprint, it would be completely broken after it was extracted.

In Zhao Zhigao's opinion, if it were him, even with this fingerprint, it would probably be of no use.

The degree of damage of the fingerprints also exceeded Lu Chuan's imagination.

Judging from the completeness of this fingerprint, it would be good if two or three feature points could be found. From a judicial perspective, this is far from the 15 feature points that can be used as judicial evidence.

But no matter what, this is the key clue extracted at the scene, and it is the only possible fingerprint of the suspect. Lu Chuan has 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.

"Go back and try it first to see if it works. If it doesn't work, we can talk about it later."

Originally, the Tianzhou City Criminal Investigation Detachment had not discovered anything at the scene. This time he was able to collect some trace evidence, and finding a broken fingerprint was already a major breakthrough.

It was already past nine o'clock in the evening when the two completed the second on-site investigation.

Unfortunately, apart from a broken fingerprint found on the firewood pile in the kitchen, Lu Chuan did not make any more discoveries anywhere else.

The murderer was indeed very cautious and careful, and he cleaned the entire room very cleanly wherever he stepped into.

Lu Chuan did not plan to do the trace evidence analysis himself, but handed it over to the Technical Identification Center.

Tianzhou City has a trace evidence analysis laboratory, but its technical level is average.

Of course, the technical level that Lu Chuan refers to generally refers to their level of collecting trace evidence, rather than their level of doing technical analysis.

After handing the things to them, Lu Chuan had to perform a second autopsy on the body overnight.

Although we have obtained a lot of information from Wang Jian, the forensic doctor of the Tianzhou City Criminal Investigation Detachment.

A second autopsy might not yield anything.

But to be honest, if Lu Chuan didn't take a look and check it out himself, he would still feel a little uneasy.

Anatomy room.

It had been nearly 10 hours since the body was pulled out of the refrigerator, and it had completely softened.

This time, Zhao Zhigao was in charge of the trace evidence analysis, while Wang Jian was accompanying Lu Chuan during the autopsy.

"Captain Lu, where do we start?"

Although Wang Jian is a forensic doctor, and his technical level is among the best in the province, he is actually better than Wang Changjiang, the forensic doctor of the Haizhou City Criminal Investigation Detachment. However, Wang Jian admires Lu Chuan's forensic ability very much, especially knowing that he is definitely one of the best in the province in terms of bone identification.

This time, Lu Chuan did not conduct a comprehensive examination according to the forensic autopsy process, but wanted to find some special clues.

"Just check the surface."

The body was naked when it was found.

Lu Chuan had just found some chemical fiber ashes that had not been completely burned in the stove at the crime scene.

Since the suspect had no intention of hiding the identity of the victim, the act of burning the victim's clothes was most likely intended to fuel the fire.

Of course, since there are blood stains on the clothes, it is very likely that this is also to hide certain traces.

However, Lu Chuan has already made some judgments about the physical characteristics of the suspect, but they are not particularly accurate.

When the body was found, it was curled up in the iron pot. It was unable to stretch out, and coupled with the long steaming time, much of the skin had melted and stuck together.

After Wang Jian made a basic assessment of the cause and time of death, he did not actually perform a complete autopsy on the body.

Because the meat is already cooked, it will fall apart at the slightest touch, which is very different from the dissection of an ordinary corpse.

This is especially true this time after being frozen and thawed.

Lu Chuan focused on the knife wound on the victim's neck. Just as Wang Jian said, there were traces of repeated cutting on the knife, which means that the suspect really did not understand the structure of the human body, and even finding the carotid artery required trial and error.

Another thing is that the suspect must have opened the victim's chest with his bare hands and taken out the heart.

Judging from the wound at the location where the organ was broken, it should have been torn off abruptly, and there are no signs of cutting with a sharp weapon.

Afterwards, Lu Chuan focused on the signs of binding on Wang Jingya's hands and feet.

"We extracted some fiber material from the ankle and tested it and found it was a nylon rope, but we didn't find any nylon rope at the scene, so it must have been burned."

Wang Jian explained the work he had done.

Lu Chuan nodded.

"Can you determine the time?"

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 depth of color of the restraint marks.

Lu Chuan agreed with Wang Jian's judgment on this point. Lu Chuan observed that the focus shifted to the hands, feet and head.

It was Lu Chuan who first proposed that Wangjiagou Village in Beiwang Town was not the first crime scene, mainly because there was no blood spray at the scene.

After the autopsy, Lu Chuan's guess was taken more seriously.

Lu Chuan had already conducted a detailed inspection at the scene and confirmed that there was no blood spray point.

Lu Chuan did not find any signs of bumps on the deceased's hands, feet, scalp, etc.

So judging from this point, if the murderer bled the victim directly in the iron pot on the stove and then steamed the body, this possibility is basically unlikely.

The reason is that although the victim was protected and could not mount an effective resistance, she was still able to move. During the killing process, she even made some violent movements, causing friction between her hands and feet and the iron pan.

But Lu Chuan did not find any scars on the hands and feet of the deceased.

(End of this chapter)