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

Chapter 155 He's Not A Murderer

After Zhang Wei was arrested, he cooperated with the pre-trial very much.

"Two nights ago, at around seven o'clock in the evening, I was driving a taxi near the meat joint factory, and I picked up the woman on the way."

The encounter between the two was originally a very ordinary relationship between a passenger and a taxi driver.

However, the two quarreled because of a few words.

"I didn't think of killing her at first, it was all her own fault."

According to Zhang Wei, Wang Guizhi looked down on him, and Zhang Wei took the initiative to chat with him after getting in the car.

"In our line of work, we drive alone for a whole day. Passengers usually chat a little when they get in the car."

"But that woman said that I fell in love with her and wanted to harass her."

"Where did you do it? What did you use to kill someone?"

"It's at the No. [-] cold storage. I use a swing stick. I keep a swing stick in my car. It's usually used for self-defense."

In the interrogation room, Zhang Wei began to explain the incident.

Including the reason for the conflict between the two, the location where Zhang Wei killed, and the method of killing, they were all clearly explained.

"After killing her, I put her in the No. [-] freezer and froze for a while. I was afraid that there would be blood stains when dismembering the body, which would be difficult."

"Where are the tools for dismembering the corpse?"

"It's hidden in the freezer."

"Why throw the corpse in the folk street?"

"I ate at Folk Street last month. I ate a fly at Burning Noodle Restaurant. They didn't pay me."

"I thought about throwing it there, disgusting them..."

Zhang Hui interrogated, and Ren Qiang sent people to find the first scene according to Zhang Wei's account.

Sure enough, the first scene was discovered near the No. [-] cold storage.

The dismemberment scene was also found in the cold storage, and the dissection tools were also successfully found.

In addition to these, more than [-] plastic bags that were not discarded were found in the trunk of Zhang Wei's taxi.

It contained the rest of Wang Guizhi's body.

The corpse dismemberment case in Folk Street has been completely solved.

The rest are all process work.

The survey of the first scene, the survey of the dissection site, and the arrangement of the remaining corpses.

In addition, information such as height, fingerprints, DNA information, blood type, etc. should be collected for the murderer.

Next, in about a week, all the files and materials will be sorted out, and the criminal investigation detachment can hand them over.

Surveying the office now.

"Xiao Lu, you are in charge of the suspect's information."

Liu Guodong wrapped his coat and greeted Yang Sen and Lao Bai: "Let's go to the scene first."

Several people greeted each other and started to prepare for the work.

cell.

Lu Chuan met Zhang Wei.

Chinese character face, dark skin, thick eyebrows.

Perhaps because of driving a taxi all the year round, Zhang Wei is a little hunchbacked.

Before being transferred to the detention center, Zhang Wei will be temporarily detained in the criminal investigation detachment, but he will not stay in the interrogation room.

There are two special detention rooms on the first floor of the criminal investigation detachment, which are used to detain criminal suspects for a short time.

Tomorrow, Zhang Hui will go through the relevant procedures and send him to the detention center.

Lu Chuan heard from Lao Bai that there is an unwritten rule in the detention center. Generally, such suspects who have committed homicide will not be locked up with other people as long as there are enough cells.

In the detention room, Zhang Wei curled up and leaned against the corner.

Height, weight and other basic information have just been tested by the criminal police. Lu Chuan came here mainly to check the blood type, print fingerprints, and extract DNA samples for inspection.

"Am I going to die?"

Zhang Wei cooperated very well with Lu Chuan's work, raising his arm, drawing blood, and pulling out his hair without blinking his eyes.

Lu Chuan nodded seriously: "If you really killed the person, he will die."

Killing is not necessarily death, it may be indefinite.

But dismemberment after murder is extremely bad in nature and has a huge impact, so the death penalty has not gone away.

"Must die..."

Zhang Wei muttered to himself, not caring about Lu Chuan's departure.

After leaving the detention room, Lu Chuan still had work to do.

The complexity of the murder case is far more complicated than most people imagine.

This is another corpse dismemberment case, and the materials that need to be sorted out here can fit into a storage box.

In the current survey laboratory, Lu Chuan processed the collected test materials.

Fingerprint entry, blood type detection, hair follicle treatment...

Ok?
Lu Chuan, who had just recorded his fingerprints in the system, was testing Zhang Wei's blood type with blood type test strips.

"Type A blood?"

Lu Chuan thought he had read it wrong, and compared the color of the test paper again, it was indeed type A blood.

However, this is wrong.

"Is there something wrong with the test strip?"

The blood type of all animals, including humans, refers to the specific antigen type on the red blood cell membrane.

Human blood types actually have two systems.

A well-known ABO blood group system, the blood type of this system, according to the type of specific antigen, human blood is analyzed into four types: A, B, AB and O blood.

But in addition to the above blood types that most people have, there is another blood type classification system.

It is the RH blood group system. The RH negative blood that is often heard in the news is a specific type of this blood group system.

The confirmation of blood type is the basic skill of bloodstain morphology analysis.

In the past, the detection of blood type required special chemical reagents, which was quite troublesome to check.

Now it is much more convenient, drop a drop on the test paper, and the blood type can be determined according to the color change of the test paper.

Of course, in actual use, the accuracy of the test paper is not necessarily [-]%.

For example, now, Lu Chuan has determined that Zhang Wei's blood type is type A, but this is not consistent with the blood type of the dripping blood that Lu Chuan extracted from the broken body.

That blood type is AB.

The blood type of the victim Wang Guizhi was type O.

That is to say, the dripping blood that Lu Chuan found on the broken body was not Wang Guizhi's own, and there is a high probability that it belonged to the murderer.

However, if Zhang Wei is the murderer, how could the dripping blood be different from his own blood type?
Taking out a piece of test paper again, Lu Chuan did the experiment again.

Type A blood!

Still type A blood!

Why does this happen?

There are two possibilities. The first is that there is a problem with the blood type test of the dripping blood that Lu Chuan extracted from the corpse.

However, since the dripping blood has dried up, it is impossible to test the blood type with test strips, so Lu Chuan used the original chemical reagent method.

The probability of error in this method is extremely low.

Another situation is that there is something wrong with the test strips that Lu Chuan is using now.

The blood type test strips in the current survey laboratory are replenished once a year, and the current test strips are the ones that Lu Chuan had before he went to work.

Looking at the production date, it has been two years.

Although it has not expired yet, if there is a problem with storage or transportation, the test strip may become invalid.

There must be no mistakes in the murder case.

Lu Chuan gave up the test paper method this time and directly used chemical reagents.

In the beaker, a drop of bright red blood dripped into the chemical reagent, and the color changed instantly.

The colors of the color chart next to it and the reagent in the beaker are getting closer and closer.

3 minute later.

Type A!
Zhang Wei's blood test result was type A blood!

After confirming the result, Lu Chuan's expression changed drastically.

Zhang Wei...maybe he wasn't the murderer at all!

(End of this chapter)