novelraw Chapter 358 DNA information to determine identity
Chapter 358 DNA information to determine identity
Chapter 359 DNA information to determine identity (normal update and 1500 monthly ticket plus update will be issued together!)
Drive steel nails from Baihui Point?
Chen Yan had only seen this method of killing in novels before, but this was the first time he encountered it in reality.
this case...
It's a bit strange.
Why would the murderer kill in this way?
Although the cause of death of the victim has been found, it does not help the investigation of the case so far.
The steel nails found in the body of the deceased were about 5 centimeters in length and had rusted. They can be bought in any hardware store.
It is very difficult to determine the identity of the murderer by tracing the source of the steel nails.
Because the cause of death of the deceased was rather strange, Chen Yan followed Wang Meng to the autopsy room.
The steel nails have been removed from the deceased's skull and placed in a tray.
Chen Yan picked up the steel nail with tweezers, opened the visual gene lock and observed carefully.
The steel nails are covered with rust, and there are marks of knocking on the caps of the nails.
Have any fingerprint information been collected on the nail?
Wang Meng shook his head: We checked the steel nails carefully and found no useful information.
Chen Yan nodded, which was also expected by him.
The crime scene was not the first scene where the deceased was killed.
In the process of dumping the body, the murderer did not leave any traces.
And from the current point of view, the murderer chose to dump the body in the self-built area of the mortuary, and his fundamental purpose was to destroy the body and wipe out the traces by means of demolition and construction.
It was only because of the inadvertent discovery of the vagabond Wu Guizhong that the existence of the corpse was exposed.
Now we just have to wait.
Wait for the identity information of the deceased to be determined, and the results of interviews with the surrounding residents in the self-built housing area.
put down the nails,
Chen Yan walked to the dissection table: Did the deceased have any traces of sexual assault?
Wang Meng nodded affirmatively: We collected menstrual fluid residues from the body of the deceased.
At the same time, residual substances were collected from the mouth and chest of the deceased.
Now doing DNA information analysis.
Wang Meng looked at the time on his watch: In about two hours, the DNA information analysis will be completed.
Okay, let me know as soon as you have any news.
Yes, Captain.
...
4 pm.
Regarding the determination of the identity of the deceased, Zhang Chaoyang has not sent back any news.
Zhao Bing was responsible for visiting and investigating the surrounding residents in the self-built housing area, but no valuable information was sent back.
However, the DNA information collected from the deceased has been tested.
Wang Meng turned on the projector and began to report.
Captain, we have analyzed a total of 4 types of DNA information from the residual material samples collected from the deceased.
four?
Chen Yan's expression was slightly taken aback, how could there be so many pieces of DNA information?
Could it be that the deceased had been humiliated in turn?
Considering the appearance of the deceased, this possibility exists.
However, the clothes on the deceased were not messy or particularly wrinkled.
If it's taking turns insulting...
Did the murderer re-dress the dead?
Report in detail.
Wang Meng nodded and began to report: We have analyzed the residual substances collected from the lower body of the deceased and analyzed three kinds of DNA information.
The material collected on the chest was analyzed to reveal two kinds of DNA information.
A DNA message was found in the material collected in the oral cavity.
Instructions for all DNA information are listed separately on the projector.
The three types of DNA information found in the lower body overlap with the two types of DNA information on the chest.
But the DNA information in the mouth and all other DNA information are not overlapping.
That is to say, the deceased had intimate contact with four men in a short period of time.
Having intimate contact with so many men in such a short period of time...
Could it be that the identity information of the deceased was the young lady who did not return home at night?
However, it is not quite like it.
The deceased looked good, with fair skin and a good figure.
In particular, Chen Yan noticed the perfume used by the deceased at the scene.
Chen Yan had smelled this kind of perfume before on Shen Yunshu's body.
Although Chen Yan didn't know the specific brand of this perfume, the price of the perfume Shen Yunshu used was definitely not cheap.
How can a young lady who works in the wind and dust wear such an expensive perfume?
And the clothes worn by the dead.
Although Chen Yan didn't know the specific brand of the clothes, the material of the clothes was very good.
It's not cheap at first glance.
In addition, the deceased had worn a ring on the ring finger of his right hand, a bracelet on his left hand, and a necklace around his neck.
If we analyze these details...
The economic conditions of the deceased should be very good.
It seems that it shouldn't be a prostitute.
Chen Yan shook his head.
There is too little information at this time to determine the identity of the deceased.
Wang Meng, give the DNA information to Wang Wugang.
Let him do a comparison in the DNA database to see if he can find anything.
yes!
In the office, Chen Yan was pacing back and forth.
A young woman had intimate contact with 4 people in a short period of time.
After being killed, his body was dumped in the self-built housing area late at night.
The rings, necklaces, and bracelets on his body all disappeared.
On the surface, it is likely to be a robbery and murder case.
But generally speaking, robbery and homicide are mostly crimes of passion.
Either it was a temporary idea, or it was a follow-up killing, and then the robbery.
There will be traces of the crime.
It is also unlikely to kill people with steel nails.
Therefore, the loss of important property on the body of the deceased is likely to be deliberately forged by the murderer.
In order to create the illusion of robbery and murder.
Of course there is another possibility.
The deceased was engaged in dust industry.
After the transaction was completed, the other party had no money to pay for the prostitution, and wanted to kill him.
After the killing, the victim's belongings were looted.
call……
He let out a long breath of foul air.
Chen Yan stopped thinking.
Whatever the cause of the deceased's killing is now only speculation.
The most fundamental thing is to determine the specific identity of the deceased.
I checked the time on my phone, it was already 9:30pm.
There is still no news from Zhang Chaoyang and Zhao Bing.
After walking out of the office, Chen Yan came to Wang Gang's office.
Hearing footsteps, Wang Gang turned his head to see Chen Yan: Captain, you are here.
Well, Chen Yan nodded: How is the comparison?
There is no information yet.
Although the establishment of the DNA information database was very early in time, the information of the input personnel was not very rich.
Only those with prior convictions are currently included.
For ordinary citizens, it is difficult to collect DNA information, and they will not deliberately enter the DNA information database.
Therefore, if the perpetrator has no criminal record, it is difficult to determine the murderer through the comparison of the DNA information database.
Continue to compare, if there is any good news, there will be a breakthrough in the investigation of the case...
OK.
11 p.m.
Zhang Chaoyang and Zhao Bing returned to the second detective team.
In the meeting room, Chen Yan could tell from the expressions of the two that the investigation was not going well.
really.
Captain Chen, the identity of the deceased has not been confirmed yet.
We conducted a survey around the Taipingfang self-built housing area, and there were no reports of missing persons.
Other detective teams have also been contacted, and there have been no missing persons reports in the past two days.
There are also detective teams in several nearby cities who have also contacted.
There have been three missing person reports in the last two days.
Two males and one female, the missing female was aged 52 and did not match what we found dead.
Chen Yan nodded, then looked at Zhao Bing at the side.
Team Chen, my visit and investigation didn't provide any particularly valuable information.
The construction of the Taipingfang self-built housing area started three days ago.
Because of the construction noise, there is also a lot of dust.
The surrounding residents are less likely to approach the self-built housing area at night.
Besides, there are resettlement housing complexes for demolition personnel in the surrounding areas. There are many tenants and the residents are complex.
The flow of people is also very large, and it is very difficult to visit and investigate.
Regarding this point, Chen Yan had already expected it.
The self-built housing area where the deceased was found was one of the three self-built housing areas in Liancheng.
It has existed for thirty years.
The Taipingfang area that is being demolished is only a part of this self-built housing area.
Last year and the year before last, a large area of self-built housing was demolished and converted into resettlement housing.
Therefore, both the flow of people and the complexity of the personnel are very large.
I am very aware of the difficulty of advancing the work.
However, the identity of the deceased has not yet been determined, and the investigation of the case is at a standstill.
Chaoyang, Zhao Bing, you still have to work harder.
We have now determined the cause of death of the deceased and found 4 types of DNA information from the deceased.
But now we haven't found any results in the DNA database.
The determination of the identity and occupation of the deceased is related to the direction of our next step in investigating the case.
So the work of the two of you is the top priority.
After exhorting Zhang Chaoyang and Zhao Bing, Chen Yan looked at the others: Do you have any other opinions on the investigation of the case?
***************
This is the second case analysis meeting.
There are 36 detectives in the second detective team in the meeting room.
But no one spoke.
The main reason is that there is too little useful information about the case.
The scene was not the scene of the first crime, and the clues left by the murderer were very limited.
Now that the identity of the deceased has not been confirmed, there is no way to propose a specific investigation direction for the next step.
Therefore, it is imperative to determine the identity of the deceased.
Captain... Song Lingxuan's voice came from the edge of the conference table.
Although Song Lingxuan has just joined the job, she has grown very fast.
In the trace identification team, it has gradually become the backbone force.
This time, Song Lingxuan went to the scene with her master.
I have a suggestion, I don't know if it is appropriate.
Oh? There is nothing suitable or not, let's talk about it.
Well, that's right.
When I inspected the scene, I found that the clothes worn by the deceased were DR brand.
The clothes of this brand are international luxury brands, and the price is relatively expensive.
The average person rarely wears this brand of clothes.
And there are very few DR brand stores in Liancheng.
When I was shopping in the mall some time ago, I saw this kind of clothes worn by the deceased.
It was confirmed that the clothes worn by the deceased were new this year, so I thought I could investigate from this aspect.
clothing?
Chen Yan had already noticed during the on-site inspection that the clothes on the deceased were made of better materials.
But I really don't know much about the brand statement.
But Song Lingxuan's suggestion is very good.
When Zhang Chaoyang and the others who were in charge of investigating the identity of the deceased heard this, their eyes lit up.
If what Song Lingxuan said is true, then there is a good direction to determine the identity of the deceased.
By investigating the sales information of DR brand stores, it is very possible to find the deceased.
Okay, that's a good suggestion.
Chen Yan looked at Zhang Chaoyang: Chaoyang, tomorrow morning you will take Xiao Song to investigate these DR brand counters.
yes.
This means that the ruler is shorter and the inch is longer.
Zhang Chaoyang had never been exposed to this brand of clothing before.
Where can Zhang Chaoyang afford clothes that cost tens of thousands of dollars a piece?
Ordinary men rarely pay attention to news in this regard.
Song Lingxuan is different, which is why there are some female detectives in the detective team.
It's not just that men and women are not tired when working together.
What women pay attention to is sometimes what men ignore.
...
Noon on the 18th.
Zhang Chaoyang and Song Lingxuan brought back good news.
Captain Chen, we found it!
Xiao Song's method is really easy to use.
Zhang Chaoyang reported excitedly in the conference room: The clothes worn by the deceased are the new models of DR brand this year.
Each piece of clothing sells for more than 20,000 yuan.
We found the sales record of this dress at the DR brand counter of the Pacific Department Store.
A total of three pieces of this dress were sold this year.
Turning on the projector, Zhang Chaoyang showed Chen Yan the sales record.
However, in the back-office system of the counter, we can only check the sales records, and there is no way to find out who it was sold to.
Next, Xiao Song and I went to the counters of the three shopping malls where the clothes were sold to check.
Three people, a man and two women, were found to have purchased the clothes.
Then we retrieved the surveillance video, and finally made an important discovery at the DR counter of Xidan Department Store.
Captain Chen, look...
Zhang Chaoyang opened the video, and it was a picture of a woman leaving the DR counter.
Click.
Click the mouse to pause the screen.
The woman in the video just turned her head, and a familiar face was frozen on the projection screen.
It is the dead.
Finally, we investigated the bank card records of the deceased when he bought clothes.
But when the deceased bought clothes, the bank card she swiped was not her own.
It's a secondary card of a credit card. The owner of the main card is a man named Meng Jianglin.
Meng Jianglin? Who is it?
Just now we have investigated the specific information of Meng Jianglin.
Switching to the screen projection, a photo of a bald man appeared on the screen.
Meng Jianglin, male, 52 years old, general manager of Liancheng Yuanfang Industrial Company.
it is good!
Send Meng Jianglin immediately.
yes!
But what is surprising is that Meng Jianglin is not in Liancheng.
The mobile phone was also turned off, and the detectives sent by Chen Yan did not find Meng Jianglin.
Only Meng Jianglin's wife, Zhao Ying, was contacted.
How do I know where that dead ghost went?
Since I have some money, I change women to raise my mistress every day. I think he will die in the belly of a woman sooner or later.
If you really have something to do with him, go find a woman named Gu Dongmei.
This Gu Dongmei is Meng Jianglin's health massage therapist. In fact, he is his third son. She must know where Lao Meng is.
It turns out that Gu Dongmei was originally Zhao Ying's health massage therapist, but was later attracted by Meng Jianglin.
The two hooked up together.
However, it is obviously impossible to find Meng Jianglin through Gu Dongmei.
Because, Gu Dongmei found in the population system has a total of 36 people in Huaguo.
Comparing the photos of the ID card, among them, a woman named Gu Dongmei, who was originally from Guizhou Province, was the deceased!
Four hours later, the basic investigation of the information about the deceased was clear.
...
meeting room.
The third security case analysis meeting.
Zhang Chaoyang began to introduce the situation.
The deceased, Gu Dongmei, female, 25 years old, was from Guizhou, Guizhou, and came to Liancheng four years ago.
I ran a massage and health care parlor, but it was not open to the public.
It was originally Meng Jianglin's wife Zhao Ying's masseuse, but after meeting Meng Jianglin, the two hooked up.
Now she is Meng Jianglin's mistress.
There is a boyfriend named Wang Xiaobei, 26 years old, who is a delivery rider.
After the basic situation was introduced, Chen Yan started the arrangement work.
First, find out all the relationships of the deceased Gu Dongmei.
Are there any friends, are there any enemies, besides Meng Jianglin, are there any other close men, etc. I want all the detailed information about Gu Dongmei.
Second, investigate all the whereabouts of Meng Jianglin, the general manager of Yuanfang Industrial Company, over the past two days, especially during the period from the 16th to the 17th.
Third, investigate the relationship between the deceased Gu Dongmei's boyfriend Wang Xiaobei.
My girlfriend has been missing for two days and has not reported the crime until now. From the current point of view, this Wang Xiaobei is suspected of committing the crime.
And summon Wang Xiaobei, I want to interrogate Wang Xiaobei myself.
If Wang Xiaobei knew about the mistress relationship between the deceased Gu Dongmei and Meng Jianglin.
Then the possibility of Wang Xiaobei's revenge and murder is very high.
Fourth, compare the DNA information found in Gu Dongmei's body with Meng Jianglin, Wang Xiaobei... and Wu Guizhong who reported the discovery of the corpse.
The autopsy personnel found 4 kinds of DNA information in the body of the deceased Gu Dongmei.
This is very abnormal.
Because from the information obtained so far, there are only two men who have an intimate relationship with Gu Dongmei.
One is her boyfriend Wang Xiaobei, and the other is her lover Meng Jianglin.
Since Gu Dongmei was Meng Jianglin's mistress, it is very likely that she had close contact with Meng Jianglin some time before she was killed.
Then it is normal to detect Meng Jianglin's DNA information on Gu Dongmei.
And her boyfriend, Wang Xiaobei, may have had close contact with Gu Dongmei before she was alive.
But why were 4 kinds of DNA information found in her body?
Who are the other two men?
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