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

Chapter 115 Familiar Fingerprints

For the fingerprint analysis of the second corpse, after Lu Chuan returned from the scene, he ran around the system immediately.

The result was the same as the first corpse, there was no target information in the system, and the identity verification failed.

Yang Sen's comparison of the DNA information of the corpses was just a process, and he didn't expect to be rewarded at all.

The comparison result of the system is a pleasant surprise.

Rushing to the computer, Yang Sen quickly checked the comparison results.

Lao Bai and Lu Chuan on the side also put down their work and surrounded them.

If the comparison is successful, the identity of the second corpse will be confirmed.

"Compared?"

When Lao Bai came over, Yang Sen had already seen the result, but the result was a bit unexpected.

"It's a comparison...it's not a comparison."

Lu Chuan went to the computer and took a closer look. There was indeed a hint that the homologous DNA information was successfully compared.

However, the object of comparison is the DNA information of the first corpse discovered yesterday.

"The DNA information of the two corpses is of the same origin?"

There are many types of comparison of DNA information.

For example, the same identification is to determine identity information through DNA.

In addition, there are paternity tests and homologous DNA confirmation.

The former judges the parent-child genetic relationship, while the latter judges the sibling relationship.

And now the results appearing on the computer confirm that the DNA genetic material of the body found yesterday and the body found today are homologous.

The two are sisters.

"I'll tell Team Qin the result of the comparison first."

Liu Guodong took out the comparison report from the printer and went directly to report.

Although the identities of the two corpses have not been confirmed, they are sisters, which is of great help in solving the case.

When the front line is investigating, the scope can be further narrowed down.

After a brief surprise, Lu Chuan got busy again.

The physical evidence collected this morning must be analyzed as soon as possible.

Then Lu Chuan will collect trace evidence from the second corpse.

Judging from the current clues, the construction site of Qinghe Amusement Park is definitely not the first scene where the murderer committed the crime.

The two people were killed in the same way, and the murderer was the same person, so there is a high probability that the first scene of the murder is also the same place.

The trace evidence analysis of the second corpse can be compared with the trace evidence analysis of the first corpse, and there may be new discoveries.

It was already three o'clock in the afternoon when Lu Chuan finished his work here.

"Master, I'll go to the forensic doctor to collect trace evidence from the second corpse."

Liu Guodong nodded: "Do you need our help?"

The trace physical evidence of the first corpse has been sent to the Technical Appraisal Center of the Provincial Department.

Director Song Jiangguo personally called the leader of the Technical Appraisal Center, and the results should come out soon.

After all, there is not much demand for micro-evidence identification in the whole province, or not even a few times a year.

The manpower there is still free.

"No, I asked Shen Yan for help yesterday." Lu Chuan looked at the time: "And there is an autopsy over there today, I'll go and see if it's finished."

There is only one dissecting table in the dissecting room, and Lu Chuan has to wait for the autopsy of a corpse to complete the collection of trace evidence.

Anatomy room.

Wang Changjiang just took off his white coat and was washing his hands.

Unlike Shen Yan who is fully armed, Lao Wang's forensic doctor is much more casual when dissecting.

A mask is generally one layer, and protective clothing and the like are not used at all, only gloves need two more layers.

"Brother Wang, are you done with your work?"

Wang Changjiang turned his head and showed his big white teeth with a smile: "Routine autopsy, I found some things, but not many, just finished."

"Oh?"

Although Lu Chuan is not a forensic doctor, he is still interested in forensic discoveries: "Brother Wang, what did you find?"

"There are bruises on the subcutaneous tissue. Before the deceased was killed, it is very likely that he had suffered some blow injuries, but it took a long time and the murderer's methods were relatively secretive, so the skin was not injured."

Shen Yan also took off her protective equipment at this time: "The wrists and ankles of the deceased who were found yesterday had traces of tape binding, which should be left by the murderer during the attack."

The autopsy report has been sent to Qin Yong, but it is not very helpful.

In an autopsy, the chest, abdomen, and pelvis are examined immediately after surgery.

Visually observe all organs to determine the degree of corruption and the possibility of poisoning.

And according to the freshness of the organs, the time of death can be judged more accurately.

The time of death of the first body was around one o'clock in the morning the day before yesterday.

After the murder, the murderer threw the body directly.

"Although the outside of the corpse was frozen and stiff, the stomach and internal organs were not completely frozen, and no traces of internal organs were found during the autopsy."

Wang Changjiang shook off the water stains on his hands: "Xiao Lu, are you here to collect trace evidence from the second corpse?"

Lu Chuan nodded: "I've done the first one, and I'll do the second one too, to see if I can gain anything."

"That's fine, Xiao Shen will help you, and I won't accompany you."

After Wang Changjiang left, Lu Chuan began to collect trace evidence of the second corpse.

Shen Yan has already cooperated once, and this time she also has experience.

This is the case with a criminal police officer. When solving a case for the first time, he is always a little confused.

The more cases you solve, the more proficient you will be.

This is also the reason why many suspects are caught immediately after killing people.

What the criminal police do every day is to deal with criminals, but the murderer may only have one chance to deal with the criminal police.

Killing is not as proficient as doing it a few times, no matter how much you practice and plan in advance.

The reason why serial murders are difficult to solve is because the murderer was not caught after killing No. 1, and then killed again without being caught.

As a result, once you are familiar with it and have experience, it will be even more difficult to catch.

Because the first corpse had just been dissected on the dissecting table, the second corpse was temporarily placed on the ground in the corner.

The dissection room has a corpse refrigerator, but this corpse was supposed to be thawed for dissection, so it was impossible to put it in the refrigerator.

It took some effort for Lu Chuan and Shen Yan to get the corpse onto the dissection table.

Every dissection is no less than an operation by a doctor.

The smooth dissecting table has been cleaned up by Shen Yan and even disinfected.

This ensures that the body will not be recontaminated.

Moving a corpse in the anatomy room of the criminal investigation detachment is actually no different from moving any object.

But if you're at a funeral home...it might feel different.

"I'll go over it with a UV inspection light first."

With yesterday's experience, Lu Chuan focused on taking care of the corpse's wrists and ankles this time.

Sure enough, the traces of tape binding were clearly visible under the irradiation of ultraviolet light.

Not only that, on the inside of the left ankle, half a fuzzy fingerprint on the tape trace appeared in Lu Chuan's vision.

Although the fingerprint is not very clear, it is enough for fingerprint identification analysis.

Could it be left by the murderer?

"Help me take off the inspection light."

Shen Yan parted the corpse's thigh, feeling a little emotional.

If this is really the fingerprint left by the murderer, then the case might be solved!

Intermediate fingerprint collection skills are perfect for this.

Soon, Lu Chuan completed the collection of fingerprints, but the more he looked, the more familiar Lu Chuan felt the fingerprints were.

It seems to have seen it somewhere!
(End of this chapter)