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

Chapter 329 Bloody Footprints
There are three reasons for this particular feature.

One is the constant gravitational force, the other is the constant blood composition, and the last reason is the constant blood velocity.

In normal people, if a blood vessel ruptures, about [-] liters of blood in the body will flow out in a short time.

This time is fixed when the size of the wound satisfies the conditions, because the beating power of the human heart is relatively constant.

Lu Chuan looked at every bloodstain very carefully.

And compare it with the on-site reconstruction done by the QZ City Criminal Investigation Detachment.

Others are also observing the entire scene in their own way, and making some records from time to time.

What attracted Lu Chuan's attention the most were the bloody footprints on the ground.

There were far more bloodstains on the ground than on the walls and furniture, but many traces had been wiped away.

The suspect should have a certain awareness of anti-reconnaissance, at least know how to erase his own footprints.

The murderer committed violence to the victim as soon as he entered the door, and from the blood on the wall, it can be seen that the process of violence was continuous.

From the door to the bed by the window, the distance is about ten meters.

The unit type of this bachelor apartment is very simple, it is a rectangle after entering the door.

Wang Min did not make major changes to the interior after renting it. A bed was arranged near the window sill, some furniture was placed around it, and a sofa was placed two meters away from the head of the bed.

On the left hand side of the entrance is the toilet and kitchen.

According to Qin Hui just now, it is not known how the murderer entered the room. In fact, there is a high probability that the murderer tricked Wang Min into opening the door.

If the other party opened the door with a key, Wang Min may not necessarily be seen after opening the door.

If you can't see people, there is no such thing as harming the victim as soon as you get started.

Of course, this guess is only a relatively high probability, and it cannot be completely ruled out that the murderer opened the door with a key, and Wang Min was at the door. After all, the left hand side of the door is the kitchen and bathroom.

Starting from the entrance door, the murderer attacked the victim continuously, and blood was spilled, and the murderer's footprints would definitely remain on the ground.

All the way to the bed, the victim was raped and killed.

Afterwards, when the murderer left, he wiped his own footprints, and there were obvious traces of blood on the ground.

And during this process, there were two strings of bloody footprints left. Next to the shoe cabinet at the edge of the door, there were shoes with bloody footprints.

It was exactly what Qin Hui said that when the other party left, he wore the victim's shoes and left footprints.

In fact, from the perspective of footprint analysis, no matter whether the murderer is wearing shoes larger than his own feet or shoes smaller than his own feet, the general physical characteristics of the murderer can be judged.

The bloody footprints on the scene, one started from the door, and the other started from the head of the bed, and retreated backwards to the entrance door.

This can be judged from the force direction of the bloodstains under the footprints.

However, there is a problem here.

Since the murderer had erased his own footprints, why did he put on the victim's shoes and leave two new sets of footprints?

Is it forgetting something and turning back again?
Or some other reason?
As for fingerprints, Lu Chuan didn't pay special attention to them.

The criminal investigation detachment of QZ city is a little worse than Haizhou city in handling cases, but not much worse.

Since fingerprints are such an important evidence, since the other party did not extract them, it means that there should be none at the scene.

Obviously, the other party should have worn gloves.

Strong and murderous, leaving no trace, the murderer...

It doesn't have to be the first crime.

Two hours later, members of the crime team withdrew from the scene one after another.

Downstairs, Li Donglin and seven people gathered together to briefly inquire about the situation.

"Wang Song, what do you think?"

Li Donglin was originally from Tianzhou City and knew Wang Song originally.

"The murderer is likely to be a repeat offender."

Wang Song made his first judgment.

Several other people nodded, obviously agreeing with Wang Song's point of view.

"On what basis?"

"Heavy murders are different from ordinary cases. Most murderers are in a state of high mental tension and excitement when committing crimes. At this time, their thoughtfulness will be greatly affected."

"After the incident, due to the natural exhaustion of the body, it was difficult to concentrate particularly."

"So, in most cases, there will be many biological characteristics of the murderer left at the scene of a strong murder."

"However, we learned from the forensic report that the murderer used a condom at the time, and no biological tissues such as skin flakes and hairs belonging to others were extracted from the surface of the deceased's body."

"This shows that the murderer was very restrained during the strengthening process and did not have too much physical contact with the deceased."

"On the other hand is the handling of the scene. The blood on the ground cleaned up by the murderer after the murder obviously has a certain anti-reconnaissance awareness."

"It is difficult for a first-time perpetrator to have such rigorous logic. There is a high possibility of being a repeat offender, and the murderer may have committed crimes such as physical abuse before."

"One more thing, let me add."

The person who spoke was a short, fat middle-aged man named Song Mingguang, an action team leader from the Criminal Investigation Detachment of Qianzhou City.

"After cleaning up the blood on the ground, the murderer should have returned to the bed at the door."

"Why did he go back?"

"It should be a supplementary knife."

"Part of the blood on the bedside covered the bloody footprints, indicating that the murderer only gushed out a large amount of blood after returning to the bedside. The fatal wound on the neck of the deceased was caused by the murderer returning after wiping the blood on the ground."

This time, Lu Chuan agreed with Song Mingguang's judgment.

Indeed, two of the bloody footprints beside the bed were flooded with a lot of blood.

Moreover, this judgment is also in line with normal logic.

After all, the fatal injury of the deceased was a severed neck artery. If the murderer had severed the artery before committing the violence, the nature of the case would have changed again.

"Have you found anything else?"

"I suggest re-examining the residents in the building. What Wang Song said just now is very reasonable. The other party has a high probability of having similar criminal experience. Although they may not have similar criminal records, they can start from small things such as obscenity, singleness, and voyeurism. .”

"I'm trying to identify the footprints here. It will take about three hours to try to delineate the general physical characteristics of the murderer."

The footprints this time are different from the usual ones. The blood footprints can be used to model the footprints.

Moreover, the shoes worn by the murderer belong to the victim, and many details cannot be inferred through simple data measurements.

Lu Chuan's footprint identification and analysis this time was not easy.

With a certain direction, everyone began to act.

Of the seven people, Lu Chuan returned to the Criminal Investigation Detachment to do footprint analysis, and the other six people were divided into three groups and stayed in the apartment building directly.

　Ask for tickets, push books.

　　
　
(End of this chapter)