National Forensic Doctor

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

"The victim was given a large amount of antibiotics. Cefoperazone sodium and tazobactam sodium are also a type of cephalosporins, third-generation cephalosporins. They are most commonly used in hospitals, and are rarely used in small clinics. Jiang Yuan gave Liu Jinghui a brief introduction , added: “But domestic antibiotic management is not strict, and cefoperazone is not difficult to purchase. "

Liu Jinghui was surprised: "Input it after death?"

"How is that possible?" Jiang Yuan shook his head: "It is impossible to infuse normally after death, and the needle holes left are different. If the needle was inserted after death, it would have been discovered long ago. The victim Li Yanmin was infused before he was alive, and It should be that after several days of fluid infusion, metabolism stops after death, and a large amount of antibiotics will be distributed in the tissues of the body, playing an antibacterial role. Looking at this physical and chemical report, the samples extracted on the first day were used in the end..."

Liu Jinghui finally understood and said, "That is to say, Li Yanmin was receiving infusions for many days before his death. Was he really sick? Or was he forced to receive infusions?"

"He must be really sick. There are signs of infection in the dissected lungs, but they are relatively mild. In addition, the pinholes on the back of his hands were also confirmed during the first autopsy, but they were not removed at that time. While thinking about it, I didn't screen his medication status." Jiang Yuan shook his head as he said that ordinary cold medicines would be metabolized in a few days, so there was no need to screen them.

Physics and chemistry laboratories and the like are also extremely busy units. If the criminal police doesn't bring a bunch of things over and ask them to check them all, they will do it. It is possible to get scolded bloody.

Requiring the police to conduct detailed investigations into criminal cases and even murder cases is ultimately a "CSI effect" and is an excessive public demand for criminal science and technology. However, it is impossible to achieve the level of TV dramas in real criminal cases. Technical resources, some technologies themselves are not even feasible.

Similarly, once something like a pinhole appears, the forensic doctor will certainly pay attention to it, but the first thing to consider is drug abuse. After the sample is sent to the toxicology laboratory, a routine drug test will be done, and the conclusion will basically be drawn. Unless the task force has other evidence or appeals, such as news that the deceased used a new type of drug, and then conducts a comparative test, the traceability of the evidence provided by the pinhole ends here.

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

In this case, when Jiang Yuan did the second autopsy, the skin on the back of his hand was no longer good, so there was no point in worrying about the pinhole. At the same time, the lungs had been removed. However, even if he did an autopsy, the pinhole and slight lung infection were nothing. It could even be said that they just explained each other.

Although most common colds are upper respiratory tract infections, it is now very common for people to develop mild pneumonia from colds. Li Yanmin closed the business that day, probably because he felt unwell and thought he had a lung infection, so he gave himself fluids and powerful antibiotics.

Or, he may have used ordinary antibiotics in the early stage, but felt they were not effective, so he switched to cefoperazone. To put it bluntly, what he used was correct. Moreover, without the assistance of CT, blood images, etc., his personal body feeling was probably quite uncomfortable. Treatment with cefoperazone injection was considered symptomatic. In addition, he works in a clinic all year round, so it is estimated that ordinary second-generation cephalosporins are no longer sensitive...

"Li Yanmin gave himself an infusion and used cefoperazone sodium and tazobactam sodium for infusion. It probably had nothing to do with his death or the murderer." Jiang Yuan thought about it, put down the physical and chemical report, and came to this conclusion: "It's probably just a coincidence that the deceased was in a state of high drug concentration due to the infusion due to illness, and then he was killed, and the body also had an antiseptic effect."

Even the well-informed Liu Jinghui was a little speechless at this time.

After working for so long, I came to a conclusion that has nothing to do with it!

Liu Jinghui took a deep breath and thought to himself: As long as it is evidence, it is useful.

After muttering a few words, Liu Jinghui said slowly: "If Li Yanmin was still in need of infusion when he died, then his physical condition at the time was not very good and he needed to rest at home. Therefore, either he had to go out for some reason. Either way, he should be in the clinic."

Li Yanmin usually lives in the bedroom above the clinic. He also buys a small house for rent in a town near Changyang City. It is impossible to live there even if he thinks about it.

Jiang Yuan nodded, Liu Jinghui's reasoning was certainly reasonable.

Wan Baoming was a little anxious and asked: "We have been to the clinic twice. There is no sign of forced entry, and no evidence has been found that it was the first scene. In this case, is it still an acquaintance who committed the crime? If it was an acquaintance who committed the crime, The place where the crime was committed is not in the clinic, so where is it?"

"If Li Yanmin is sick, is it likely that someone will come to visit him?" Liu Jinghui took out his notebook and started taking notes, and then asked Wang Chuanxing: "How many mobile phones does Li Yanmin have? His call records and WeChat text messages Let’s organize these things again, especially the call records and information from May, Sixth, and Seventh, and focus on research and judgment.”

"Okay." Wang Chuanxing also wrote quickly. These are things that the police officers in Jiang Yuan's special case team are good at, and Yu Wenshu's people are not needed to do them.

"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 why the degree of decomposition of the body is not in line with expectations has been determined, the time of death can be relatively easy to determine. . The time of death can basically be determined to be the 7th."

LV6's time of death identification is also in full swing at this time.

"This is good news." Liu Jinghui nodded repeatedly: "Finally something has been gained. Looking at it this way, on the night of the 4th, the victim Li Yanmin closed his business. He must have felt uncomfortable at that time, and then started to take medicine for himself. After the 5th, Two days after No. 6, on No. 7, the concentration of drugs in his body was already very high, and he met with misfortune."

"On the 8th, Li Yanmin's mobile phone also sent messages to other people." Wan Baoming whispered: "If he died on the 7th, the message on the 8th was sent by the murderer."

"Did it come out in the village?" Liu Jinghui asked.

"Yes, it was sent in the village. The phone was shut down on the night of the 7th. After it was turned on on the morning of the 8th, a few messages were sent, and then it was shut down again and then disappeared." Wan Baoming repeated the previous message and then said: " We have tracked the problem with mobile phones before, but we don’t have any good clues to follow it up.”

"Now that the time of death is confirmed, it can be completely confirmed that the murderer has been in the village for at least two days and is probably living in the village." This conclusion given by Liu Jinghui is not unusual. The village has factories, dormitories and rental houses. Because of this, there are more than 10,000 people staying there for a long time. In such a prosperous environment, it is not easy to find the murderer.

Despite this, Liu Jinghui's mood became high as he talked, saying: "Furthermore, there are a lot of surveillance in the village. At least in the central area, several traffic arteries have surveillance, and some factory gates also have surveillance. If the death time is determined to be the 7th, the murderer will most likely appear in the village on the 7th. The most important thing is that the murderer is not a person, at least the murderer cannot abandon the body alone, right?"

"Well, the victim weighed 180 pounds. There was no dismemberment and there were no signs of bumps on the body. If it was carried by one person, he would have 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, you can see it from the appearance.

"I think we can study the surveillance videos of the crime scene and the village again." Liu Jinghui once again presented his surveillance manual.