Chapter 488 Collecting Blood Samples
On the morning of the third day after the incident, the weather was gloomy. The sky above Haizhou City was covered with lead clouds. The occasional muffled thunder sounded like gods fighting in the sky.
Lu Chuan had a good rest yesterday. The work in the current survey office last night was relatively simple, mainly preparing for DNA information identification and comparison.
This morning, the action team will organize personnel to take blood samples from the seven households in the rental house and the landlord.
It will take about an hour or two to complete. The investigation office will strive to complete the extraction of DNA information of all residents and landlords today, as well as the identification and comparison of the DNA information with the murderer's remaining blood stains.
Compared with the work in the current investigation office, the forensic department was much busier. Shen Yan basically didn't sleep last night.
There are four corpses in total. The autopsies of two corpses were completed in the afternoon of the incident and yesterday morning. The autopsies of the other two corpses were completed yesterday afternoon and evening.
Anatomy is definitely a physical job. It was not easy for Wang Changjiang and Shen Yan to complete the dissection of four corpses.
Not to mention the autopsy report that follows. Shen Yan worked overtime until about four o'clock in the morning yesterday to complete all the corresponding work.
In the cafeteria, Forensic Doctor Shen's face looked obviously tired and slightly pale.
"Drink some milk and take a tonic."
The food in the Criminal Investigation Detachment Canteen can now be said to be the best in the entire Haizhou City Public Security Bureau. The breakfast is nutritious and healthy, including soy milk, fried dough sticks, tofu, and steamed buns. , milk, noodles, there are many varieties.
The lunch menu is rich, with four cold and eight hot dishes, two soups, and at least five meat dishes.
Simple and delicious dinner.
Speaking of the RMB 100 million donated by Qiangsheng Group, the most significant benefit for the entire detachment of police officers is the renovation of the canteen.
As soon as it was time to eat, many people exclaimed that it was so nice to have money.
“I can’t drink it, I want to sleep.”
Shen Yan pointed to her face pitifully: “Look, she’s turned into a yellow-faced woman...”
Lu Chuan pinched the side of the other party's still elastic face: "It's okay, my forensic doctor Shen is naturally beautiful. Come, eat some soy pig's trotters to replenish yourself."
"Huh? Are you? Didn't you mock me for being fat? "
Lu Chuan: "..."
Do you mean that?
Although Forensic Shen seems to have gained a little weight recently, there is still a certain gap between being fat. Doesn’t eating pig trotters replenish collagen?
“Nothing.”
Lu Chuan’s head shook like a rattle: “I’m talking about collagen. Pig’s trotters replenish collagen.”
"Okay, then I'll eat...one...two pieces!"
The canteen in the morning was very popular, and most people didn't go back last night.
In fact, in normal times, everyone is used to coming to the cafeteria for breakfast.
In the past, the cafeteria of Haizhou City Criminal Investigation Detachment did not have breakfast, and there was basically no dinner. That is to say, when working overtime, some fast food such as instant noodles would be prepared.
It's not that the chefs in the canteen couldn't get up to make breakfast, but that the funds were very low at that time. The canteen funds allocated by the authorities were only a small amount, and it was already good to have a lunch meal.
"What were your results yesterday?"
Forensic Doctor Shen said while biting into the sauced pig's trotters: "There are no other special findings. It is unlikely that clues will be found in the autopsy."
The autopsy in this murder case was an unremarkable one.
The corpse was a fresh corpse that had been dead for just a few hours. There was no special smell, and all the blood was gone. There was a pungent smell of blood at the scene, but after the corpse was brought back, there was no special smell. . The cause of death of the four victims was very clear, and there was no mystery about the time of death.
"You are right about one thing. We also conducted a careful inspection of the wounds on the corpse. There are indeed burrs. The knife used by the other party was not sharp."
Forensic Doctor Shen did work hard yesterday. The sauced pig's trotters were eliminated.
"Master has a meeting today, so I will go back and catch up on my sleep later. You also need to conduct DNA information identification and comparison here, right?"
Forensic medicine is done here After the autopsy examination and the autopsy report are issued, the work is basically completed.
Shen Yan can go back to make up for her rest, but Wang Changjiang may have to attend a case analysis meeting later and will not be able to rest for the time being.
Not to mention Lu Chuan's side. They had to wait until the action team collected the blood samples in the morning and then compared the DNA information to see the results.
The best result is to be able to compare directly and the case will be solved.
If you can't compare directly, it will be a lot of trouble.
Zhang Hui and others dealt with it early and set off. Yesterday, the local police station notified everyone in the rental building not to go out today and wait for the criminal investigation detachment to collect blood samples.
When Zhang Hui and others arrived, the preparations at the territorial police station were almost complete.
In fact, when the murder occurred, the local police station was the busiest.
Because a lot of basic information needs to be contacted, investigated and provided by the local police station.
For example, if the criminal police wants to investigate someone’s information and background information, where can they check it?
It must be in the household registration system of the police station. This is the first and most important source of information.
The household registration information system is richer than most people imagine.
In recent years, in most cases, those doing household registration in police stations are college students who have just graduated, and most of them are women.
But this was not the case in the past. When the computer system was underdeveloped, the people who registered household registration were basically the old people in the institute, who had probably worked in this institute for decades.
You can tell how many dogs a family has without using a system.
Now that group of people are gradually retiring, and now the fast-paced life has made it more difficult for people to get familiar with each other. The old methods sometimes don’t work very well, so the system content must be more sophisticated. Rich and complete.
For another example, for this blood sample collection work, the police station must prepare people in advance, so that the work can be started as soon as the criminal police arrive.
Of course, blood collection is actually done by professionals. The criminal investigation detachment has a cooperative hospital and hires professional blood collection nurses.
The number of people in the blood collection area this time is relatively small, that is, there are about 20 people from 7 households in the rental house.
There are other times when it is necessary to collect DNA information from a large number of people, and that is when everyone goes into battle.
The local police took people and went door to door to collect blood. No one was left behind. They compared the data based on the permanent population, floating population, etc.
At this time, villages, towns, communities, etc. all need to cooperate.
When Zhang Hui came over, it was already bright and more than twenty people were lined up to collect blood one by one.
At the same time, a group of people were acting. Sun Jun had sent people to the bank to investigate the economic transactions of all personnel.
This is relatively simple. The criminal investigation detachment will issue an official letter and the bank will naturally connect with it.
The process is also relatively simple, just check the financial transactions and bank statements of these people.
(End of this chapter)