Chapter 629: Evidence collection stage (asking for monthly votes).

Chapter 629: Evidence collection stage (asking for monthly votes).

"Since it's fresh, let's do it first." Jiang Yuan was not too picky. Theoretically speaking, the difficulty level of the discovery itself is low enough. As for whether the problem is difficult or not, we have to make an in-depth investigation before we can have a say.

Since we have to conduct an in-depth investigation, it's better to just detect it and forget about it - Jiang Yuan had a very straightforward idea. He didn't want to spend too much energy on other things, as long as there were no pitfalls in the project.

Huang Qiangmin was following him on this trip, and Chai Tong was transferred away. Jiang Yuan felt that there shouldn't be a big problem in this regard.

Wang Chuanxing and others came forward, separated out the files, spread them out on the long conference table, and everyone read them separately.

Jiang Yuan also sat down, took out the forensic report again, took the photos, and took the

The forensic skills of this eucalyptus are 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. It shows that the deceased lost consciousness or lost the ability to control his limbs at least for a short period of time.

This shows from another aspect that the victim's body was not under control.

At the same time, the deceased's expression was natural and 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 thought was medication control.

Although the forensic doctors in front of them did some toxicology tests, the tests were all commonly used drugs, and in addition to the commonly used drugs, there are many more drugs that can cause people to faint.

Jiang Yuan wrote the word "medicine" in his notebook.

Secondly, could it be an acquaintance?

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 made a mistake".

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 would have been possible for him to wear it for a while.

Finally, is it possible to kill someone outside and then move them into the car?

Jiang Yuan found photos of the victim's car after he was moved out. The main driver's seat was filled with feces and urine. Regardless of the issue of elegance, these filth were left behind by the victim on the eve of her death. In other words, at least her last moments were in the main driver's seat.

Even if the murderer could move the body, he couldn't move the feces and urine sideways.

As for waiting to transport it at the last moment, the conclusion was based on 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 the others, I think we should check in two directions first. One is the medicine side. I want to do it in more detail. Could you please Zhou Da? Contact the laboratory?"

"No problem." Detective Lao Zhou said. He quickly figured out what Jiang Yuan was thinking. Although he doesn't quite agree with this idea, after all, if you have unconventional medicine in your hand, you can just poison the victim directly. Why bother with carbon monoxide? It's just taking off your pants and farting, isn't it?

Therefore, although Lao Zhou had considered this idea, he did not bother 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 relationship network must have been checked. No results?" Jiang Yuan asked Lao Zhou again at this time.

Lao Zhou shook his head and said: "There is no result at the moment. The victim's relationship with his wife is stable, and they have a child who has gone to junior high school. The family is relatively well-off and has good conditions. There are hundreds of thousands of yuan in savings, and they have a three-bedroom apartment in Beijing. The 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 around her. As for relatives and friends, we also checked 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 clients, 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 took the initiative: "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 to have local police with them to work, otherwise they will not be familiar with all aspects. On the contrary, it is a clear arrest and the like, and sending people directly will not be affected too much.

"There is no surveillance at the parking place. How is the surrounding area? Are there any conclusions?"

"No. We specifically checked several important contacts, 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 of the surrounding cars. , and nothing useful.”

"Okay. Let's do this first."

For Jiang Yuan, the case was just the beginning, and no matter how many ideas he had, he had to investigate before he could continue.

Jiang Yuan made a few more arrangements and gave instructions, 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 was 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. They saw meaningful smiles on their faces.

"The bodies have 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, it smells bad, it 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 by the fingerprint inspection on the whiteboard, then turned on the investigation light and leaned into the Mercedes-Benz A and other information involved in the case.

Pure trace inspection can only conduct regional inspections during the exploration stage, 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, compared to the previous ones, this one gave Jiang Yuan a better feeling.

Now the pressure will not be small, but that is for the elders. Jiang Yuan only needs to break the eucalyptus.

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 origin of the carbon monoxide that killed the victim.