While Lu Chuan was doing the identification and analysis of the scene, the forensic doctor also performed an autopsy on the body.
It is not much different from the conclusion made by Lu Chuan at the scene. The fatal injury of the deceased was the scar on the neck. The rupture of the carotid artery caused a large amount of blood loss, which eventually led to death from shock.
The carotid arteries are located on both sides of the throat and are the two most easily felt arteries in the human body.
Put your palms on both sides of your throat and you can clearly feel the beating of the carotid arteries.
It is very different from bleeding after a vein injury. After an artery is injured, the blood bleeds in a gushing manner rather than a flowing manner.
After the carotid artery is injured, blood can spray up to three meters away.
However, after the carotid artery is injured, it will not cause the victim to die immediately. The blood loss process will last about 3 to 15 minutes.
During this process, the victim is still conscious and will experience different symptoms such as weakness, fatigue, chills, dizziness, etc.
Compared with arteries in other parts of the world, injuries to the carotid artery are more difficult to deal with, and the possibility of fatal injuries is greater.
Especially when both carotid arteries are injured, this change is almost irreversible.
If other arteries are injured, it may be possible to stop arterial bleeding by squeezing the blood vessels with huge pressure.
But after the carotid artery is injured, using this method will undoubtedly accelerate the victim's death.
Because the carotid artery supplies blood to the brain, once the carotid artery is compressed and unable to pass blood, the brain will soon die due to lack of oxygen.
One of the victim's two carotid arteries was completely severed, and the other was also cut in 2/3 of its length.
The middle part of the throat has been completely cut open, with only a trace of wire still connected.
From a forensic perspective, it can be judged that the murderer was precise and ruthless when he struck.
The angle is tricky, the strength is great, and the knife seals the throat.
The judgment of the time of death was also consistent with Lu Chuan's, it was 1:30 in the morning yesterday.
While the current investigation and forensic teams are busy working, the serious crime team and the BZ City Criminal Investigation Detachment are also busy.
The identity of the deceased has been clarified. Zhao Kai, male, 38 years old, ran a building materials business in the northern market.
The person who called the police was his wife Li Guifen.
"Li Guifen and Zhao Kai got married before the Chinese New Year in February this year. They were both married for the second time."
During the day, Gao Xiang had arranged for someone to investigate the family of the deceased. Condition.
“We contacted Li Guifen’s unit immediately and confirmed that Li Guifen had been at the railway from 8:30 a.m. the day before the incident, that is, on the 22nd, to 8:30 a.m. on the day of the incident. Duan was on duty.”
“The time of death of the deceased was 1:30 in the morning on the 23rd, so it is confirmed that Li Guifen had no time to commit the crime.”
While Li Donglin was listening to the report, the pen in his hand kept recording something in the notebook.
Gao Xiang continued his report: "And judging from the method of killing the victim at the scene and the steel nails on the top of his head, the murderer is the murderer of three serial murders since March 16. ”
Although three serial killings occurred, the police did not disclose the relevant details.
How did the murderer kill? What weapon was used to kill the person, as well as the steel nails on the head, etc., these details have not been disclosed to the public.
If someone imitates the case, the possibility is basically non-existent.
This judgment is also recognized by the crime squad.
"Is there any connection between this Zhao Kai and the previous three people?"
Gao Xiang shook his head: "We have checked the call records between the first three victims and Zhao Kai during the day. , including bank transfer records, but nothing was found. ""What about the chat software?"
"No, I checked them all, and they probably don't know each other."< br>
The relationship between the three people after the first three cases occurred was also the focus of Gao Xiang's investigation, but a week passed without much progress.
Li Donglin thought for a while and looked at Wang Song: "How are you doing here?"
This morning Lu Chuan and others were conducting surveys at the site. Wang Song, Song Mingguang, Luo Qiang and others immediately followed An investigation was launched.
Wang Song straightened his back: "Let me talk first."
"After asking the policeman Li Guifen about the situation this morning, I got an overview of the community and made some Certain visits and surveys.”
"As the Gao detachment just said, Li Guifen's suspicion of committing the crime can basically be ruled out."
"Both of them are married for the second time. They were introduced to each other last year, and they met in February before the Chinese New Year this year. On the 1st, the two got their marriage certificate and had a wedding. "
"The wedding was not a big event, and the people attending were just friends who were familiar with each other."
" The two people had a prenuptial agreement before marriage, and their respective properties and finances were owned by each other."
"After getting married, the two people will spend 2,000 yuan each month for public expenses of the family."
"After investigating the circumstances of these two people's first marriages, they divorced three years ago and two years ago respectively."
"Li Guifen has a fourteen-year-old son who is with her ex-husband."
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"Zhao Kai has a special situation. He was divorced two years ago. The child was twelve years old and was awarded to him at the time. However, he left the child with his parents in his hometown and never took him with him. "
"After investigation, the ex-wife and ex-husband of the two are currently not in BZ City.
One is in Tianzhou and the other is in Haizhou, and the call records and chat records are both. No recent contact between them has been found.”
Wang Song's investigation here is obviously much more detailed.
“Regardless of the murderer’s method of killing or whether he is the murderer of a serial murder case, in this kind of family situation, I think it is necessary to exclude family members from committing the crime as soon as possible.”
Wang Song has just entered the investigation, so he has not fallen into the fixed mindset of serial murders like Gao Xiang and others.
“I checked the bank statements of the two people and found no abnormalities. The ex-husband and ex-wife of both parties have normal monthly alimony payment records.”
“From these aspects Look, it is not likely that Zhao Kai was killed due to family reasons.”
Wang Song looked at Gao Xiang: "So there is basically no problem with the judgment made by Gao Detachment that the murderer is a serial murderer."
Some people from the BZ City Criminal Investigation Detachment are not convinced. , looked at Wang Song secretly.
Of course there is no problem. With such an obvious killing method, how could it not be the same person?
Wang Song didn't care, and continued: "So, why did the murderer kill four unrelated people?"
Wang Song's eyes were bright.
"We are also initially considering that there should be some connection between the victims."
Gao Xiang also has a headache.
Wang Song’s thoughts or questions are what they want to find out, but the problem is that no useful clues have been found this week. (End of this chapter)