Chapter 115 Familiar Fingerprints
Fingerprint identification analysis of the second corpse. After Lu Chuan returned from the scene, he ran around in the system as soon as possible.
The result was the same as the first corpse. There was no target information in the system and the identity verification failed.
When Yang Sen compared the DNA information of corpses, he was just going through the process and didn't expect to gain anything.
The system comparison results are an unexpected 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 gathered around.
If this comparison is successful, the identity of the second corpse will be confirmed.
"The comparison is successful?"
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 even a comparison."
Lu Chuan walked to the computer and took a closer look. There was indeed a prompt that the homologous DNA information comparison was successful.
However, the target of the comparison was the DNA information of the first corpse discovered yesterday.
“The DNA information of these two corpses is homologous?”
There are many types of comparison of DNA information.
For example, identification is to determine identity information through DNA.
In addition, there is also paternity testing and homologous DNA confirmation.
The former determines the genetic relationship between parent and child, and the latter determines the relationship between siblings.
The results now 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 comparison results first."
Liu Guodong pulled out the comparison report from the printer and went directly to report it.
Although the identities of the two corpses have not been confirmed, the relationship between the two is sisters, which is also very helpful for solving the case.
When the frontline is investigating, the scope can be narrowed down a bit.
After the brief surprise, Lu Chuan became 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 Playground is definitely not the first place where the murderer committed the crime.
The two men were killed by the same method, and the murderer was the same person, so the first scene of the murder was most likely in the same place.
The trace evidence analysis of the second corpse can be compared with the trace evidence analysis of the first corpse, and new discoveries may be made.
It was already three o'clock in the afternoon when Lu Chuan finished his work here.
"Master, I will go to the forensic doctor to collect trace evidence from the second corpse."
Liu Guodong nodded: "Do you need our help?"
The trace evidence of the first corpse has been sent to the provincial technical appraisal center.
Director Song Jiangguo personally called the leader of the Technical Appraisal Center, and the results should be available soon.
After all, the demand for trace evidence identification in the province is not very large, or only a few times a year.
The manpower over there is still free.
"No, I asked Shen Yan for help yesterday," Lu Chuan looked at the time: "And the dissection is being done over there today. I'll go and see if it's done."
There is only one dissection room. In order to collect trace evidence, Lu Chuan had to wait until the autopsy of a corpse was completed.
Anatomy room.
Wang Changjiang had just taken off his white coat and was washing his hands.
Unlike Shen Yan, who was fully armed, forensic doctor Lao Wang was much more casual during the dissection.
Masks generally only have one layer, and protective isolation gowns and the like are not used at all. Only gloves require two more layers.
"Brother Wang, are you finished here?"
Wang Changjiang turned his head and smiled, showing his big white teeth: "Routine dissection, some findings, but not much, just finished. "Oh?"
Although Lu Chuan is not a forensic doctor, he is still interested in the findings of the forensic doctor: "Brother Wang, what are you finding?"
"There are bruises on the subcutaneous tissue. It is very possible that the deceased was injured before he was killed. He suffered some blows, but it took a long time, and the murderer's method was more secretive, so the skin was not injured."
Shen Yan also took off her protective equipment at this time: "The deceased found yesterday had injuries on his wrists and ankles. The traces of tape restraint should have been left by the murderer when he committed the crime. "
The autopsy report has been sent to Qin Yong, but it is not very helpful.
In an autopsy, the incision is followed by an examination of the chest, abdomen, and pelvis.
Conduct visual inspection of all organs to determine the degree of corruption and possible poisoning.
And based on the freshness of the organs, the time of death can be determined more accurately.
The time of death of the first corpse was around 1 a.m. the day before yesterday.
After the murder, the murderer dumped the body directly.
"Although the outside of the body was frozen stiff, the stomach and organs were not completely frozen. During the autopsy, no traces of frozen organs were found."
Wang Changjiang shook off the water stains on his hands: "Xiao Lu, you Are you here to collect trace evidence from the second corpse?"
Lu Chuan nodded: "I did it for the first one, and I will do it for the second one as well, to see if there is any gain."
"Okay, Xiao Shen will help you, and I won't accompany you."
Wang Changjiang left, and Lu Chuan began to collect trace evidence of the second corpse.
Shen Yan has already cooperated once and has experience this time.
That’s what it’s like to be a criminal police officer. It’s the first time you solve a case and you’re always a little confused.
The more cases you solve, the more proficient you become.
This is also the reason why many suspects are caught immediately after killing someone.
What a criminal police officer does every day is to deal with criminals, but a murderer may only have one chance to deal with a criminal police officer.
When it comes to killing someone, no matter how much you practice or plan in advance, it's not as good as the skill you get by doing it several times.
The reason why serial murder cases are difficult to detect is because the murderer was not caught after killing the first person, and he was not caught after killing the next person.
As a result, once you are familiar with it and have experience, it becomes even harder 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 autopsy room has a refrigerated cabinet for cadavers, but the corpse was meant to be thawed for dissection, so it was impossible to put it in the refrigerated cabinet.
It took some effort for Lu Chuan and Shen Yan to get the body to the autopsy table.
Every dissection is no less than an operation performed 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 contaminated again.
Moving corpses in the autopsy room of the Criminal Investigation Detachment is actually no different from moving any object.
But if it's at a funeral home...it might feel different.
"I will scan it with an ultraviolet inspection lamp first."
With yesterday's experience, Lu Chuan focused on the wrists and ankles of the corpse this time.
Sure enough, the traces of the tape binding were clearly visible under the illumination of the ultraviolet lamp.
Not only that, on the inside of his left ankle, half a blurry fingerprint appeared in Lu Chuan's field of vision on the tape mark.
Although the fingerprints are not very clear, they are enough for fingerprint identification analysis.
Could it be left behind by the murderer?
"Help me take off the examination light."
Shen Yan opened the corpse's thighs, feeling a little emotional.
If these are really the fingerprints left by the murderer, then the case might be solved!
Intermediate fingerprint collection skills are perfect for use here.
Soon, Lu Chuan completed the collection of fingerprints. However, the more he looked at it, the more familiar the fingerprints seemed to Lu Chuan.
It seems like I have seen it somewhere!
(End of this chapter)