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

Chapter 114 DNA Information Comparison Results
Meeting Room No. [-] of the Criminal Investigation Detachment.

Liu Guodong is reporting on site survey and inspection.

"First, regarding the identity confirmation of No. 1 deceased, there is still no result in comparison of fingerprints and DNA information."

"Yesterday afternoon, we extracted trace evidence from the first corpse. This morning, the items have been sent to the Technical Appraisal Center of the Provincial Department, and the results will be available tomorrow."

"Is there anything found in the physical evidence investigation around the scene?"

Surveillance around the scene is a fixed process that must be carried out in every murder case.

During the murder process, the murderer is likely to leave his own dander, hair or other physical evidence.

Liu Guodong shook his head: "We collected a total of 120 pieces of physical evidence around the scene yesterday, and we have taken fingerprints and DNA samples for all of them."

"Lu Chuan is comparing the collected fingerprints, and there is no major discovery yet."

"After the incident happened this morning, we conducted another detailed investigation one kilometer around the scene, and collected 36 physical evidence this time."

"Most of these physical evidence should have been added from yesterday afternoon to now, and we will try to finish processing today."

The current survey is not sweeping the ground, and there will always be some omissions in large-scale surveys.

"There are also footprints we found on the outside of the wall, which is the result of footprint analysis."

"Oh? Already done?"

Qin Yong accepted the footprint analysis report handed over by Liu Guodong with some surprise.

Liu Guodong nodded: "After Xiao Lu came back, he analyzed the footprints immediately."

"The suspect, an adult male, is 1.8 meters four in height, weighs about 35 kilograms, and is between 40 and [-] years old."

Compared with yesterday, when Lu Chuan and others combined the height of the fence to analyze that the suspect was more than 1.8 meters tall, this time the conclusion obtained through the analysis of shoe prints is more refined.

"The outer edge of the suspect's footprint was more severely worn than the inner edge, but the extent was not large, indicating that the suspect had a weak outward splayed leg shape."

In fact, most human body types have some flaws.

For example, slight outward horoscopes, inner horoscopes or knee varus are common bow legs.

The formation of these leg shapes is influenced by both genetics and acquired development.

For example, calcium deficiency, irregular personal walking, etc., will cause slight deformities of the bones of the lower limbs.

The judgment of each person's leg shape can be concluded from the wear and tear of the shoes worn for a long time.

The information on the current survey office is still being sorted out, and Liu Guodong's report is temporarily over.

Qin Yong looked at Wang Changjiang, who coughed slightly.

Pharaoh had a good rest yesterday, because the body was not frozen and softened, so he couldn't do an autopsy for the time being: "The first body has been thawed, and we can do an autopsy later."

"As for the second body..."

Wang Changjiang paused: "Adult female, similar in age to the first corpse, should be between 20 and 25 years old."

"The cause of death was mechanical asphyxiation. Judging from the size and shape of the pinch marks on the neck, it should be the same murderer as the first corpse."

Liu Guodong nodded, this was also confirmed by him.

The positions of the pinch marks on the necks of the two corpses are similar, and the size of the murderer's palms inferred from this is basically the same.

Moreover, the other party wore gloves when he strangled the victim.

Lu Chuan did not find any fingerprints on his neck.

"The body has no injuries before death, and no traces of insults during life or after death have been found for the time being."

The bloodstains on the snow were dripped from the murderer's body when it scraped against the fence and damaged the skin during the process of dumping the body.

From the shape, size, and friction marks of the wound, compared with the remaining blood on the fence, it can be determined that it was left after death.

The scars left by a person while alive are different from the scars left after death.

Because the body is active and the blood is circulating, there will be an obvious defense reaction when injured before death, which is called life reaction academically.

This defense response not only refers to the active defense of the injured person, but more refers to the body activity response of the injured part.

Examples include bleeding, clotting, muscle twitching, cell division during healing, and more.

Among Lu Chuan's system rewards, in forensic pathology, there are identification and analysis skill cards for pre-mortem and post-mortem injuries.

"We will conduct an autopsy on the first corpse later, and we can issue a report in the evening. The second corpse can only be autopsied tomorrow."

……

Surveying the office now.

Lu Chuan, who has completed the analysis of the shoe prints, is comparing the fingerprints found on the physical evidence collected around the crime scene yesterday.

Advanced fingerprint identification and analysis skills allow Lu Chuan to advance very quickly when dealing with this level of fingerprint comparison.

It only takes about three to five minutes to process a fingerprint. After returning from the scene and analyzing the footprints, Lu Chuan has already completed half of the work.

Yang Sen and Lao Bai are dealing with the physical evidence brought back from the scene this morning.

"What did the murderer think, throwing the body twice in one place?"

Lao Bai has been a criminal policeman all his life, and he has never seen any case.

In the series of murders on rainy nights 20 years ago, the murderer specially killed young women in red clothes riding bicycles on rainy nights.

That year, seven people were killed, and the entire Haizhou City was panicked.

In the end, let alone going out on a rainy day, no woman dared to wear even red clothes.

17 years ago, in the Nanjiao corpse case, the murderer killed four people at the same time, and a family of four was wiped out. All the corpses were chopped up, put into woven bags and thrown into the sewer, trash can, and septic tank.

There are twelve bags in total, one of which was brought by Lao Bai for investigation, with four left feet.

The poisoning case 12 years ago, the arson case eight years ago...

Lao Bai's experience fully illustrates what it means to live for a long time.

But this time, it was the first time Lao Bai saw the murderer throwing corpses at the same place in succession.

While scanning his fingerprints, Yang Sen shook his head: "There is a high probability that the murderer has a deeper reason for doing this."

"Either he's mentally ill, or he has OCD, or there's something else that forces him to do it."

"Normal people... can't do this."

Drip!

The two were chatting, and the DNA testing equipment beside them hummed.

Yang Sen looked back: "The DNA test result of the second corpse came out, I'll run around on the computer."

Lu Chuan had already collected the fingerprints of the second corpse at the scene of the corpse dumping.

After returning to the office, an identification analysis was carried out immediately, but it was a pity.

Like the first body found yesterday, the fingerprint comparison was unsuccessful.

In the fingerprint system of Haizhou Criminal Investigation Detachment, there is no target person.

The face comparison is in Curry at the missing door, and there is no corresponding information.

It stands to reason that in this case, collecting DNA information for comparison, there is a high probability that it is impossible to compare.

Because of the DNA database of Haizhou Criminal Investigation Detachment, 90.00% of its owners have had their fingerprints collected.

The fingerprints are not compared, and the possibility of successful DNA information comparison is not too great.

However, the existence of the criminal investigation process must have its reasons.

Ding!
Yang Sen had just entered the DNA information of the second corpse into the system to start the comparison. Before he could turn around, the computer heard a notification that the comparison was successful!

(End of this chapter)