Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

Chapter 488 Collecting Blood Samples

On the morning of the third day after the incident, the weather was gloomy, and 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 field investigation office last night was relatively simple, mainly to make preparations for DNA information identification and comparison.

This morning, the action team will organize personnel to take blood samples from 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 remaining blood stains of the murderer.

Compared with the work in the investigation office, the forensic department was much busier. Shen Yan basically didn't sleep last night.

There were four corpses in total. The autopsies of two corpses were completed in the afternoon of the day of the incident and yesterday morning, and the autopsies of the other two corpses were completed yesterday afternoon and evening.

Dissection is definitely a physical job. It was not easy for Wang Changjiang and Shen Yan to complete the dissection of four corpses.

What's more, there is 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 replenish yourself."

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, with soy milk, fried dough sticks, tofu, steamed buns, milk, noodles, and a wide variety of options.

The lunch menu is sumptuous, including four cold and eight hot dishes, two soups, and at least five meat dishes.

A simple and delicious meal for dinner.

Regarding the RMB [-] 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 badly."

Shen Yan pointed to her face pitifully: "Look, she has become a yellow-faced woman..."

Lu Chuan pinched the side of the other person's face, which was still full of elasticity: "It's okay, my Dr. Shen, the forensic doctor, is naturally beautiful. Come, eat some soy pig's trotters to replenish your beauty."

"Huh? Are you mocking me for being fat? Calling me a pig?"

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's 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 morning canteen 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. In other words, 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 enough to guarantee a lunch meal.

"What was the result yesterday at your end?"

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 focused inspection of the wounds on the corpse. There are indeed burrs. The knife used by the other party is not sharp."

Forensic Doctor Shen really worked hard yesterday and wiped out the sauced pig trotters in a short time.

"Master has a meeting today, so I'll go back and catch up on my sleep later. You also need to conduct DNA information identification and comparison here, right?"

The forensic doctor completed the autopsy examination and issued the autopsy report, and the work was 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 won't 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 old people in the institute, who had probably worked in the institute for decades.

Even without using the system, you can tell who owns how many dogs.

Now that group of people are gradually retiring, and today's fast-paced life makes it more difficult for people to communicate and get familiar with each other. The old methods sometimes don't work well, so the system content must be richer and more complete.

Another example is the blood sample collection work this time. 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 was relatively small, that is, there were about 7 people from [-] households in the rental house.

There are also 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 moved, and 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 relatively simple, just check the financial transactions and bank statements of these people.

(End of this chapter)