The Municipal Bureau took this murder case very seriously and sent a detachment leader with four other people, all of whom were capable investigators. The branch office also sent the political commissar of the criminal investigation detachment and several criminal police officers.
Bai Song sat next to Chief Kong, but he was not very eye-catching. He had been playing with his phone since the beginning of the meeting. There were many people in the police station, including three leaders and several auxiliary police officers. This case needed to be constantly uploaded and issued, and a lot of information needed to be integrated in a timely manner.
Whenever there is a meeting to handle a case, it is not just the high-ranking officials who sit in it. Anyone handling the case can come in, except for cases involving confidential information.
Yan Yu didn't know how he woke up. He sat behind Bai Song with dark circles under his eyes. He didn't sit at the conference table. Except for Bai Song, everyone who could sit at the table had to be over 30 years old.
In addition to Yan Yu, several other police cadets were also present. How could the students in the police academy not be curious when encountering a murder case like this?
"There is still no news from the Lou detachment. Shao Damu has lost contact. We found his friends. His friends said that he drank too much last night and vomited in the bar. He was picked up by his friends, but they didn't recognize the friends who picked up Shao Damu." said Li Zhengwei of the Criminal Investigation Detachment.
"How dare you let others take Shao Damu away when you don't even know him?" Kong was a little confused.
"We checked the surveillance footage and found that two people were indeed the ones who took him away. They were all bad friends. The fact that they could call out Shao Damu's name was enough to make people trust them. Who would care about the others?" Political Commissar Li said, "We now suspect that these two people are the other two of the three people with traces at the scene. Subsequent tracking and surveillance footage showed that these people should have left the city. But we are not sure whether they changed cars and came back."
"Which direction did you leave the city from?" asked Captain Wang from the Municipal Bureau's Criminal Division.
"Towards Tong County," said Political Commissar Li. "The surveillance over there is still tracking them. The car has been found. It is Shao Damu's car. They will definitely not lose it. Team Lou has already chased them to Yanjiao."
"Well, there is no problem with Team Lou's work." Team Wang nodded: "What did the forensic doctor say?"
"I'll be right there," Political Commissar Li looked at his watch and took out his cell phone to make a call. At this moment, someone pushed the door and entered the conference room. It was the forensic doctor who came to do the test.
After the forensic doctor came in, he gathered the materials at hand and started to explain the situation directly.
"Let me read the autopsy results. The brain tissue showed neurotropism. There were no fractures in the body. There were multiple soft tissue contusions on the body surface, but none of them injured the inner layer of the skin. There were no fractures in the hyoid bone or thyroid cartilage. There were no abnormalities in the arteries and veins of the body. The stomach contents were some crab meat and traces of vegetables. There was evidence of drinking red wine. The stomach contents were about 100 grams. There were no obvious lesions in other organs and tissues." The forensic doctor paused and said, "Because the diphenhydramine used in this case is relatively rare, the samples were sent to the Ministry's Physical Evidence Identification Center for expedited testing. Diphenhydramine was detected in the deceased's blood and gastric contents, and the diphenhydramine content in the heart blood was 0.116 mg per milliliter. No other common poisons, sedatives, or stimulants were detected, and the test results for common drugs were all negative."
"What was the alcohol concentration and what was the cause of death?" asked Captain Wang.
"27, was in a drinking state, and the cause of death was confirmed to be diphenhydramine poisoning." said the forensic doctor.
"What is the lethal dose of this thing?" Captain Wang asked.
"This... there is no specific lethal data standard," the forensic doctor said uncertainly, "This is a daily-used drug, and there is currently no official research on the lethal dose."
Seeing Captain Wang's still questioning look, the forensic doctor added: "I've learned that if this thing is used normally according to drug standards, the blood concentration will not exceed 0.5 micrograms per milliliter."
"Wasn't the time you just mentioned just a few minutes past midnight?" asked Li, the political commissar of the East City Criminal Investigation Detachment.
"The deceased's body contained 0.116 mg per milliliter, or 116 micrograms. The daily dosage is no more than 0.5 micrograms, which is more than 200 times the daily dosage," the forensic doctor said. "According to common sense, such a large amount of this type of drug would definitely lead to death."
"Can this be included in the autopsy report?" Captain Wang said displeasedly, "If we don't even know the lethal dose, how can we determine that this thing caused the death?"
"There is indeed no data for this," the forensic doctor was not happy. He was also a veteran, and it was already amazing that he could get the results so quickly. How could he still be questioned? No matter how good the city bureau leaders were, they were not as good as the forensic doctor in this area!
It is irresponsible to talk about toxicity without considering the dosage. Basically, any drug that reaches 200 times the usage concentration will have risks. Does this need to be determined?
"Is there any similar data? What are the situations of other cases of taking Difenido?" Captain Wang spoke more rigorously. He still needed more detailed content.
"This..." The forensic doctor had a headache. Captain Wang was really an expert. His question went straight to the point: "I have to ask carefully. This kind of thing is rare."
When Political Commissar Li saw this, he also came out to smooth things over, "This situation..."
Captain Wang looked unhappy, but he didn't say anything. He had to give some face to Li Zhengwei's words. Captain Wang's case handling style was like this, always asking questions to the end, and he was used to actively analyzing these things.
"I have the data here," Bai Song put down his phone at this time and interrupted the conversation between the three people.
Captain Wang glanced at Bai Song with some displeasure, wondering who this young policeman was. He had been playing with his cell phone during the entire meeting and was now interrupting several leaders when they were chatting. He was really ignorant.
Just as he was about to speak, Bai Song started talking: "We have counted cases of taking difenidol reported at home and abroad. The lethal dose is between 3-83 micrograms per milliliter. In some cases, 3 micrograms per milliliter can cause death. If the dose in this case really reached 116 micrograms per milliliter, it must have exceeded the lethal dose, and far exceeded it."
"Where did you get this data?" Captain Wang frowned.
"It can be written directly into the final report," Bai Song replied.
"Who is this?" Captain Wang looked at Chief Kong, then at Bai Song's police number, a little confused. From the Municipal Bureau? How come he had never seen someone from the Municipal Bureau before?
He didn't see Bai Song's police number before he came here. Guan noticed that he was a young police superintendent, but when he saw the police number, he couldn't understand it.
"I'm from the Criminal Investigation Bureau of the Ministry of Justice, Bai Song." Bai Song introduced himself directly on this occasion, which would save a lot of trouble: "The data the forensic doctor just obtained also came from the Ministry of Justice's Physical Evidence Identification Center. I also asked my friends there to continue looking up some information."
Captain Wang did not continue to ask about Bai Song's situation, but nodded: "What does Captain Bai mean?"
"Difenidol itself poses a risk of death after taking a large amount of it orally, so when it is sold daily, a whole bottle only has 30 tablets, which is not too much. The bottles at the scene are also of this specification, 25 mg per tablet, and a bottle only contains 750 mg. However, I have a case where the deceased took 6,000 mg of Difenidol directly to commit suicide. After examination, the blood concentration in the body was only 83 micrograms per milliliter, which means that the drugs at the scene were far from enough." Bai Song spoke very directly: "According to common sense, to reach a concentration of 116 micrograms per milliliter, the deceased must have taken at least ten bottles. I personally think that even if the deceased committed suicide, it would not be like this, and this case does not look like suicide at all, and there are not enough bottles at the scene."
"Why can you guarantee that the deceased would not commit suicide by taking ten bottles? Wouldn't that be safer?" Captain Wang asked in return.
"Because the deceased was rich, I have counted cases of wealthy people committing suicide. Basically, they would not take such a painful and torturous method. Some would even go abroad for euthanasia. And wealthy people who commit suicide usually have a notarized will, but we didn't find one in this case. Secondly, it would be understandable if all the bottles were taken away from the scene. The bottles left behind were obviously for us to see," Bai Song said, "These are enough to explain the problem."
"Which department of the Criminal Investigation Bureau is Captain Bai from?" Captain Wang frowned. He found that Bai Song had hit the nail on the head with just a few words and directly found the key to solving the case. It can be said that this inference was a step forward.
"Case Handling Section, Deputy Section Chief." Bai Song didn't care about this matter: "Captain Wang, you understand what I mean, right?"
"Director Bai," Captain Wang seemed to be very familiar with the configuration of the Criminal Investigation Bureau, and his attitude immediately changed 180 degrees: "Before I came, the leader didn't tell me you were here. So, can you tell us more about what you mean?"
When Political Commissar Li heard what Captain Wang said, he couldn't help but sit up straighter. He couldn't help but look at Bai Song a few more times, wondering why Captain Lou didn't tell him about this.
"Even if the deceased has a special physique and a strong ability to absorb this kind of medicine, it is definitely not something that can be achieved with just a bottle of medicine. So the medicine bottle at the scene should be an interference item. I am currently considering using self-purified or concentrated drugs to poison." Bai Song said: "It is very difficult to purify the active ingredients of drugs, so in this case there should be someone with relevant channels to purchase concentrated drugs, or a high-level laboratory involved in the purification behavior, which may be a corporate laboratory or a university laboratory."
After Bai Song finished speaking, Captain Wang was about to speak, but Bai Song ignored him and continued to put forward his own point of view: "The dead person's binding marks obviously did not reach the state of complete control, more like some kind of fun binding. In addition, the dead person's alcohol concentration did not reach the level of losing consciousness. I personally have some experience with rope binding marks. This binding was not formed by the dead person himself, and judging from the binding marks, it should be left-handed. This left-handed person should be familiar with the dead person, or very close to him. It could be Shao Damu, or it could be another lover."
Then, Bai Song thought for a moment: "Difenidol's process of first inhibiting the central nervous system, then exciting it, and then inhibiting it again, and there are also some poisoning symptoms such as hallucinations, headaches, and euphoria, which are very similar to some drugs. Maybe we can't detect the common ingredients of methamphetamine and amphetamine in the body of the deceased, and we should also consider the presence of other ingredients such as cocaine, ketamine, methadone, and MA. Because these rich people may not necessarily take those common things, but they all know that those things are harmful to people and the withdrawal symptoms are miserable. I have thoroughly investigated some of the deceased's account and cash flow through my friends in the department. 57% of the monthly cash flow, which is about 100,000 yuan, cannot be explained. This may be the possibility of buying some banned drugs. You know, if this bad habit exists, the possibility of being poisoned with a high concentration of difenidol and not saving yourself will increase greatly. The direction of the investigation should be clearer."
"Director Bai," Captain Wang was stunned. "You went to the scene last night? Were you busy all night? You must have been very tired..."
"Yes, I went, but I came back to sleep. I just told my colleagues in the bureau about this matter. This is all deduction based on the clues just reported, so I didn't interrupt you when you were communicating before," Bai Song said. "There is no strict logical reasoning for the current situation, but it can be considered as a direction for investigation."
"Uh..." Captain Wang, who was always a little proud, didn't know how to respond to this sentence...
He habitually wanted to refute some of Bai Song's words, but finally nodded: "This directly adds several new investigative directions, and they all conform to the logic of handling this case. According to Director Bai, the key to this case lies in the source of the poison."
"Well, we should mainly investigate the identities of these people and who has this special channel," Bai Song said. "I personally suggest further strengthening the background investigation of the deceased and his relatives."
"This matter," Li Zhengwei glanced at Director Kong, "Director Kong, please give me your opinion."
Director Kong was stunned for a moment, and wanted to point a finger at himself, but finally stopped: "Political Commissar Li, our institute has a relatively complete staff today, and those who can help will definitely do their best."
"Director Bai is here with you now..." Political Commissar Li said, "What I mean is that we should work together and get the clues back for analysis as soon as possible."
Bai Song looked at these and felt helpless. He suddenly discovered a problem. His identity would probably be known to everyone in the institute tomorrow, and he could no longer hide it.
In fact, this is a problem in itself. He is a well-known person. Some young police officers have even seen him in newspapers and on Weibo. If he wants to hide completely, he has to disguise himself every day. But that is not necessary.
However, even so, Bai Song still has to wear his current clothes, otherwise it would be too easy to attract attention when he goes out to patrol for the people.
Seeing Bai Song distracted, Kong pushed the conversation over: "Inspector Bai, if you have any specific arrangements, you can also directly mention them. We have... Look, your junior brothers and sisters are here, let them learn more."
What Kong Suo said was very accurate. They are old, and it would be embarrassing to ask “let us learn more”, but since Bai Song’s junior brothers and sisters are here, it doesn’t matter.
"Sir Kong," Bai Song shook his head gently. "You should still follow your work habits. Besides, what I said may not be accurate. It's just my personal opinion."
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