Chapter 821: Determining the Time of Death

Liu Jinghui also sat over: "What do you mean?"

"The victim was injected with a large amount of antibiotics. Cefoperazone sodium tazobactam sodium is also a type of cephalosporin, a third-generation cephalosporin. The most common place to use it should be in the hospital. Small clinics use it relatively less." Jiang Yuan gave Liu Jinghui a simple popular science, and then said: "But the management of antibiotics in the country is not strict, and there is no difficulty in purchasing cefoperazone."

Liu Jinghui was surprised: "Injected after death?"

"How is that possible." Jiang Yuan shook his head: "People can't have normal infusion after death, and the needle eyes left behind are different. If you inject after death, it would have been discovered long ago. This victim Li Yanmin was injected before death, and he should have been injected with liquid for several days. After death, metabolism stops, and a large amount of antibiotics will be distributed in the tissues of the whole body, playing an antibacterial role. Looking at this physical and chemical report, the sample extracted on the first day was used..."

Liu Jinghui finally understood a little, and said: "That is to say, for many days before death, Li Yanmin was injecting? Was he really sick? Or was he forced to inject?"

"It should be that he was really sick. The lungs dissected have signs of infection, but it is relatively mild. In addition, the needle holes on the back of his hands were also confirmed during the first autopsy, but at that time, I didn't consider this aspect, and I didn't screen his medication situation." Jiang Yuan said, shaking his head. If it was ordinary cold medicine, it would have been metabolized in a few days, and there was no need to screen it.

Units like the physical and chemical laboratory are also units that are busy to death. It is not that the criminal police take a pile of things over and let people check them all, and people will do it. It is possible to be scolded bloody.

Requiring the police to do everything in detail for criminal cases and even homicide cases is, in the final analysis, a "CSI effect," which is the public's excessive appeal for criminal science and technology. In reality, criminal cases cannot get the technical resources of the TV drama level, and some technologies themselves are not even feasible.

Similarly, once things like needle holes appear, forensic doctors will certainly attach importance to them, but the first thing to consider is drug abuse. After the sample is sent to the toxicology laboratory for routine drug testing, it is basically the conclusion. Unless the special task force has other evidence or appeals, such as information indicating that the deceased used a certain new type of drug, then do a comparative test. Otherwise, the traceability of the evidence provided by the needle holes ends here.

A body can provide a lot of evidence, but most of it will not help solve the case.

And in this case, when Jiang Yuan performed the second autopsy, the skin on the back of the hands was already not good, and it made no sense to dwell on the needle holes. At the same time, the lungs had already been removed. However, even if he performed the first autopsy, the needle holes and mild lung infection were not a big deal, and could even be said to have just explained each other.

Although the cold that ordinary people talk about is mostly upper respiratory tract infection, it is also very common for people to develop mild pneumonia from colds now. Li Yanmin closed his business on the day, likely because he felt physical discomfort, and after realizing it was a lung infection, he gave himself an IV drip and used strong antibiotics.

Or, he might have used ordinary antibiotics in the early stage, felt that the effect was not good, and switched to cefoperazone. Speaking of which, he didn't use it wrong, and, without the assistance of CT, blood image, etc., his personal physical feeling is estimated to be relatively uncomfortable. Using cefoperazone injection treatment is also considered symptomatic. In addition, he has worked in the clinic for many years, and it is estimated that ordinary second-generation cephalosporins are no longer sensitive...

"Li Yanmin injected himself, and used cefoperazone sodium tazobactam sodium for injection, which is likely to have nothing to do with his death and the murderer." Jiang Yuan thought about it and put down the physical and chemical report, giving such a conclusion: "It is likely to be a coincidence. The deceased was injecting because of illness, and was in a state of high drug concentration, and then was killed, and the body therefore produced an anti-corrosion effect."

Even Liu Jinghui, who has seen a lot, was a little speechless at this time.

After being busy for so long, I got a conclusion that has nothing to do with this!

Liu Jinghui took a deep breath and recited in his heart: *As long as it is evidence, it is useful. *

After reciting a few words, Liu Jinghui said slowly: "If Li Yanmin was still in a state of needing injection when he died, then his physical state at that time should not be very good, and he should be resting at home. Therefore, either there is something that must be done when going out, or he should be in the clinic."

Li Yanmin usually lived in the bedroom upstairs in the clinic. He also bought a small house in the town near Changyang City to collect rent. It is impossible to live there.

Jiang Yuan nodded, Liu Jinghui's reasoning is naturally reasonable.

Wan Baoming was a little anxious on the side and asked: "We went to the clinic twice, there were no signs of forced entry, and we didn't find evidence that it was the primary scene. In this case, is it still an acquaintance committing the crime? If it is an acquaintance committing the crime, where is the crime scene if it is not in the clinic?"

"If Li Yanmin is in a state of illness, it is likely that someone will visit him?" Liu Jinghui took out his notebook and started to make records, and then said to Wang Chuanxing: "How many mobile phones does Li Yanmin have? Organize his call records, as well as WeChat text messages, especially the call records and information from the 5th, 6th, 7th, and 8th, and study them carefully."

"Okay." Wang Chuanxing also wrote hard. These are things that the police officers of Jiang Yuan's cold case task force are very good at, and they don't need Yu Wenshu's people to do it.

"The time of death should be the 7th." Jiang Yuan also lowered his head and calculated at this time, then raised his head and said: "Now that the reason for the degree of corpse decay not matching the expectation has been determined, the time of death can be relatively easily determined. The time of death can basically be determined as the 7th."

The LV6 time-of-death identification is also firing on all cylinders at this time.

"This is good news." Liu Jinghui nodded repeatedly: "Looking at it this way, on the evening of the 4th, the victim Li Yanmin closed his business. At that time, he should have been uncomfortable, and then started to use medicine for himself. After two days on the 5th and 6th, on the 7th, the drug concentration in his body was already very high, and then he encountered misfortune."

"On the 8th, Li Yanmin's mobile phone sent information to others." Wan Baoming said in a low voice: "If he died on the 7th, the information on the 8th was sent by the murderer."

"Was it sent in the village?" Liu Jinghui asked.

"Yes, it was sent in the village. It was turned off on the evening of the 7th, turned on on the morning of the 8th, sent a few messages, then turned off again, and then disappeared." Wan Baoming repeated the previous information, and then said: "We have also tracked the mobile phone problem before, and there are no very good clues to follow."

"Now that the time of death is confirmed, it can be completely determined that the murderer appeared in the village for at least two days, and it is likely that he lived in the village." Liu Jinghui gave this conclusion, which is not rare. Because the village has factory dormitories and rental houses, the number of long-term residents exceeds 10,000. In such a prosperous situation, it is not easy to find the murderer.

Despite this, Liu Jinghui's emotions became high as he spoke: "Furthermore, there are quite a few surveillance cameras in the village. At least in the central area, several traffic arteries have surveillance, and some factory entrances also have surveillance. If the time of death is determined to be the 7th, the murderer is likely to appear in the village on the 7th. Most importantly, the murderer is not alone. At least the murderer alone cannot dump the body, right?"

"Hmm, the victim weighs 180 jin, there is no dismemberment, and there are no bumps on the body. If it is transported by one person, it needs to be very strong." Jiang Yuan did not completely rule out the possibility of a single person committing the crime, but the so-called very strong can also be seen from the appearance.

"I think the surveillance video of the crime scene and the village can be studied again." Liu Jinghui once again offered the surveillance treasure book. ===== CHAPTER 822 =====