Chapter 629: Evidence collection stage (asking for monthly votes)
"Since it is a current case, let's do it first." Jiang Yuan was not too picky. Theoretically, the difficulty level of the current case itself is low enough. As for whether the case is difficult or not, it will have to be investigated in depth.
Only then have the right to speak.
Since there is an in-depth investigation, it is better to solve the problem and forget about it - Jiang Yuan's idea is very straightforward. He does not want to spend too much attention on other things other than the case, as long as there are no pitfalls in this case.
With Huang Qiangmin following him on this trip and Chai Tong being transferred away, Jiang Yuan felt that there shouldn't be a big problem in this regard.
Wang Chuanxing and others stepped forward, separated the case files, spread them out on the long conference table, and everyone read them separately.
Jiang Yuan also sat down, took out the forensic report, took the photos, and read them in order.
The level of forensic medicine in this case was quite good. Carbon monoxide poisoning was suspected and the heart blood was immediately extracted.
Based on the concentration of carboxyhemoglobin in the heart blood, not only can it be determined that the deceased was poisoned by carbon monoxide, but also the mode of onset is not chronic poisoning, but acute poisoning - if the concentration of carboxyhemoglobin is 50%, it may be
former.
This is also consistent with the situation at the scene.
The victim did not even open the car door, nor did he take any self-rescue measures. This indicates that the deceased lost consciousness or the ability to control his limbs at least in a short period of time.
This shows from another aspect that the victim's body is not under control.
At the same time, the deceased's expression was natural, his clothes were intact, and the autopsy did not reveal any mechanical violent injuries - which proved from another aspect that the victim was not under personal control at the time.
So the question is, why was the victim poisoned by high-concentration carbon monoxide in a closed car without personal control?
As a forensic doctor, Jiang Yuan's first priority is medication control.
Although the previous forensic doctors did some toxicological tests, the tests were all commonly used drugs, and in addition to commonly used drugs, there are many more drugs that can cause fainting.
Jiang Yuan wrote the word "medicine" in his notebook.
Secondly, is it possible that an acquaintance committed the crime?
However, the victim died of acute poisoning. If the victim was in the same room with the murderer, unless he was wearing a gas mask or something like that, he would definitely be dead, not to mention...
Even so, Jiang Yuan still wrote down the four words "acquaintance committed the crime".
The reason why he wrote it down was because he suddenly thought that many people now wear masks every day. At least wearing a mask is not obtrusive. If the murderer wore a mask with activated carbon, or a more special adsorbent mask,
It's possible to do it for just a while.
Finally, is it possible to kill someone outside and then move them into the car?
Jiang Yuan dug out photos of the victim's car after she was moved out. On the main driver's cab, feces and urine were flowing everywhere. Regardless of the issue of elegance, these filth were left by the victim on the eve of her death. In other words, at least her last
Right now, it’s right to be in the driver’s seat.
Even if the murderer can move the body, he can't move the feces and urine sideways.
As for waiting to transport it at the last moment, the conclusion was drawn from the carboxyhemoglobin content in the previous blood. The victim died of acute poisoning, and there was not much time for the murderer to fix the bug.
In summary……
Jiang Yuan put down the pen and paper and said: "I'm going to investigate the car next. For others, I think we should check in two directions first. One is the medicine side. I want to do it in more detail. Please forgive me, Mr. Zhou.
Contact the laboratory?"
"No problem." Detective Lao Zhou said. He quickly figured out what Jiang Yuan was thinking. Although he didn't quite agree with this idea, after all, if he had unconventional medicine in his hand, he could just poison the victim directly. Why bother?
If you use carbon monoxide again, it's just taking off your pants and farting, right?
Therefore, although Lao Zhou had considered this idea, he did not go to the laboratory directly.
However, now that the 72-hour golden period has passed, or to be precise, the brass period has passed, it is normal for Jiang Yuan to expand his investigation ideas.
"The victim's network should have been checked, right? No results?" Jiang Yuan asked Lao Zhou again at this time.
Lao Zhou shook his head and said: "There are no results at the moment. The victim's husband and wife have a stable relationship and have a child who has gone to junior high school. The family is relatively well-off and has good conditions. They have hundreds of thousands of yuan in savings and have a three-bedroom apartment in Beijing.
We have a house in the hall and two cars. Both parents are still alive, and their lives are...much better than mine, at least."
"The others?"
"The victim is an employee of a state-owned enterprise, and her relationship with colleagues in the workplace is good or bad. She is an ordinary office worker, and she does not have too sharp conflicts with her colleagues. We also checked with relatives and friends one by one, and they generally expressed shock. She
I also lent money to two relatives, one for 50,000 and the other for 30,000. Then there are classmates and some customers, which may need to be investigated more carefully."
Jiang Yuan first expressed his approval and said: "It is already very impressive to be able to find out so much in three days."
Lao Zhou smiled and said proactively: "Then let's continue to investigate along the network?"
"Okay. Thank you for your hard work." Even if the people brought by Jiang Yuan are sent out to investigate, it is best if they are accompanied by local police before they can do their work. Otherwise, they will not be familiar with all aspects. Instead, they will be clearly arrested and so on.
Sending people will not be greatly affected.
"There is no surveillance at the parking place. How is the surrounding area? Are there any conclusions?"
"No. We specially checked several important people, including the victim's husband, son, debtor, etc., but none of them appeared in the surveillance that day. I also asked the owners of some nearby cars.
, and there’s nothing useful.”
"Okay. Let's do this first."
For Jiang Yuan, the case has just begun, and no matter how many assumptions are made, it must be investigated before it can continue.
Jiang Yuan made a few more arrangements and gave instructions, and then said directly to Wang Chuanxing: "Chuanxing, you will be responsible for allocating the remaining personnel later. I'm going to see the car."
"Yes." Wang Chuanxing agreed happily. He is actually a member of the Changyang City Criminal Police Detachment. Now that he has returned, although he is not a king, his mood is very exciting.
Jiang Yuan took Mu Zhiyang to the Criminal Division Center to see the car.
Wan Baoming from the Criminal Division Center was an old acquaintance. Knowing that Jiang Yuan was coming, he even had the bathroom cleaned - the method of washing corpses ensured the cleanliness of the bathroom!
Jiang Yuan didn't need to be polite. After getting dressed, he went to see the car.
Vehicle inspection room.
You can smell a strong smell when you enter the door.
Jiang Yuan couldn't help but look at the two technicians in charge here. He saw meaningful smiles on their faces.
"The body has been moved, but there is no feces or urine." Wan Baoming used the simplest words to express the most practical impact at the moment.
Even as a forensic doctor, Jiang Yuan couldn't help but frown.
"It'll be fine once it's done." A technician advised kindly.
"I don't want to come here a second time." Jiang Yuan sighed heavily, stepped forward and opened the car door.
The strong smell of shit hits your face, smells bad, and tastes... poisonous.
"Fingerprints and DNA have been collected... find a whiteboard." Jiang Yuan had psychological expectations and endured it.
A technician ran quickly, picked up a white board, and placed it in front of Jiang Yuan.
Jiang Yuan hung a series of fingerprint photos extracted from the fingerprint inspection on the whiteboard, then turned on the investigation light, leaned into the Mercedes-Benz C involved in the case, and checked the fingerprints, DNA and other information.
Pure trace inspection can only conduct regional inspections during the exploration phase, and there is no teamwork or anything like that.
Jiang Yuan's crime scene investigation skills are now at level 5, so it would be a waste not to use them.
As for what the outcome will be, Jiang Yuan himself doesn't know.
In any case, this case gave Jiang Yuan a better feeling than the previous backlog.
The pressure on the current case will not be small, but it is only for the big guys. Jiang Yuan only needs to solve the case.
Jiang Yuan is even more looking forward to doing a simple crime scene reconstruction through certain... liquids, solids and other traces.
If we could deduce what happened at the crime scene, we might be able to understand the source of the carbon monoxide that killed the victim.
