Chapter 783 Screening

Chapter 783 Screening

Tao Lu arrived a little later. He walked in with a sullen face. Seeing that Huang Qiangmin and Jiang Yuan had already arrived, he nodded and explained: "There is a traffic jam on the road. Did you notice it?"

Huang Qiangmin shook his head slightly and said, "Jiang Yuan is watching."

Jiang Yuan raised his head and said: "Most of the evidence has been collected through previous trace inspections, including fingerprints, DNA evidence, footprints, etc. There is nothing that can be compared so far."

This kind of case is also the most common type in criminal police work. There are actually very few cases with no evidence at all, especially murder cases, because there are enough forces mobilized from all sides, and it is inevitable to obtain a large amount of information. It is extremely difficult for the murderer to remain invisible under such circumstances.

Even being invisible doesn't work, just like the burglary case that the technical detectives just did. Find the owner of a mobile phone who turns it off at 10 o'clock in the evening and turns it on at four o'clock in the morning. I will ask you what you are doing when you bring your phone into an unfamiliar area at this time and turn it off at the same time.

On the contrary, this case is more troublesome when evidence is left but there is no information in the police database.

If it is a case committed by a related person, the case may be solved by following the victim's network. It is just an ordinary premeditated murder case. It cannot be said to be easy to detect, but it is just ordinary. Most premeditated murder cases are at this level.

Many people never got full marks in the exam when they were studying. They never reached the high ground of IQ from childhood to adulthood. They had to take the test several times to get a scrap civil servant position. They stood in front of a group of middle-level people in the interview and could not answer fluently, let alone know. What is wit. When it came time to kill someone, I suddenly felt that I had no plan left and could fight against the entire system. I could single-handedly crush the IQs of hundreds of people, fight against professional equipment and software worth tens of millions, and defeat countless elite veterans who had been immersed in this for many years. At this point, I reflect on how my career was ruined.

——It has the same meaning as stock traders who think they can make money.

Of course, there are always those who are lucky and get things wrong.

For example, now, the DNA is not matched, the fingerprints are not matched, the murderer's is not matched, and the deceased's is not matched either.

When it was proved that the murderer might indeed be a lucky killer, Cui Qishan called Jiang Yuan.

After Jiang Yuan said a few words to Tao Lu, he squatted on the ground again and looked at the footprints.

If the fingerprint comparison fails, it means the comparison fails. If the fingerprint is missing, there is still an opportunity to make up for it with technology, but if it is not found in the database, then it is not within the scope of criminal technology.

The situation with DNA and the like is similar.

In contrast, the information given by footprints is more complex. Of course, its requirements for criminal department personnel are also high. To be able to read extraordinary level of footprint information, they must be above LV2 or even LV3.

Tao Lu had no technical background. Seeing that Jiang Yuan was busy and serious, he raised his head and asked Cui Qishan, "Have you found the head?"

In the case of dismemberment, what the forensic doctor needs most is the pelvis, while the criminal police are most concerned about the skull. The skull is very hard. It is difficult to break it in a normal family environment, and it is also difficult to break it if it is broken.

By analogy, a coconut is not as hard as a human head. It is very troublesome to break the coconut shell, let alone the skull.

Theoretically, if you use enough force to grab the ground, the tiles should break first, given people's current family conditions.

Therefore, when an ordinary person dismembers a corpse, the skull cannot be broken, and the human skull is so big that it is difficult to transport it without leaving traces. Therefore, criminal policemen like to look for clues when watching surveillance and the like.

Cui Qishan naturally looked for the head too much. Now he said with a cold face: "The head was boiled in the cauldron. The murderer should have divided the body first, then boiled the body in a cauldron, and after boiling it in a pot, fished it out." I threw it on the ground, and then I guess I found that it was cooking very slowly, so I used a steamer and started steaming it again."

"The body parts that were recovered were taken away? The head was also taken away. What's the situation?"

"The head is still in the pot."

Tao Lu was surprised: "Why don't you fish it out?"

"It has been boiled and the bones have been removed. Now take it out and the bones will be separated and stay in the pot. They can still maintain their appearance. Let's see if Captain Jiang can do anything." Cui Qishan then added: "The murderer is probably the boiled head." I left it when it was halfway through cooking. The head was cooked by the fire at the back, and it was soaked for a while before it was soaked to this level..."

"Hey... Got it." Tao Lu's face twisted upon hearing this. In the next few months, he probably won't be able to face food like pork head meat.

Cui Qishan then reported: "We estimate that the murderer killed someone in the yard, and the murder weapon was most likely an ax for chopping wood. Kitchen tools such as axes and kitchen knives may have been used to dismember the body. After the murderer dismembered the body, he cooked two pots of The body parts weigh about twenty kilograms per pot, and there are three baskets in the basket, each basket may weigh more than ten kilograms..."

Cui Qishan "There are still some uncooked corpses left. Mainly there are slash marks on the two legs, but they are not split. It is estimated that the murderer is not very strong."

"Maybe that's why the body was dismembered." Huang Qiangmin added: "Looking at it this way, it is possible that he killed someone with passion."

"It is indeed possible. The location of the murder is not very good. The neighbors here are relatively close, there are many old neighbors, and the houses between families are relatively close. The conditions for dismembering the body are not very good, and the axe There were slag everywhere and blood was all over the ground, but I didn’t even know how to prepare power tools in advance." Cui Qishan analyzed step by step.

"It looks like he has little experience in killing people. He doesn't know how to dismember a body, and he has no experience in the kitchen." Huang Qiangmin agreed.

Cui Qishan continued: "Speaking of which, there is actually no need to cook the corpse. It is just a matter of taking off your pants and farting. Look at the minced meat on the floor and wall. If you pick up any trace of it, you will find DNA. Now it is not possible to compare, because there is no information. Ku, the murderer obviously didn’t know this.”

"The murderer's idea was probably to stew the body in a pot. After cooking, he would clean up the scene again. He didn't have time to finish it." Tao Lu guessed: "The yard has been completely cleaned. If the neighbors don't Call the police and wait for the owner to come back. Whether it is for sale or living in, we will face the problem of decoration next, maybe the traces can be really eliminated.”

Several people were standing in the yard, near the kitchen, communicating, with police officers coming and going around them.

While each expressed his or her thoughts, Tao Lu already felt a headache.

Every difficult case has its own difficulties, and this case is about to reach a deadlock again.

"Is the intersection fully monitored? How about the number of people coming and going?" Tao Lu asked with a little hope. If the surveillance is comprehensive and there are not many people coming and going, in theory, everyone can be pulled out and sneaked out for a while.

Although it is almost impossible in practice, looking for directions through monitoring is also a way.

Cui Qishan shook his head slightly: "It's basically all covered, but there are some places that are not covered..."

"Well..." Tao Lu thought for a while, took a deep breath, and said, "In this case, we have to analyze it from the beginning. If the source of the body cannot be directly confirmed, where did the body come from? The murderer transported the person here , or I got it by cheating..."

"Let's look for it." Cui Qishan is not very optimistic about this direction, because he has really seen the surveillance. There are too many surveillance blind spots in the alley. It's basically a matter of luck. But if you look at the ones outside the alley, the number is mostly .

"Team Cui!"

Jiang Yuan shouted in the kitchen.

"Here we come." Cui Qishan hurried over.

"Cui Da, please collect all the shoe prints of people who have entered the yard and passed the kitchen today. I want to eliminate them." Jiang Yuan was still squatting on the ground and looking at the footprints.

This is a normal request. Cui Qishan immediately arranged for personnel to collect, and then asked: "Have you found anything?"

"It depends on everyone's shoe prints." Jiang Yuandao.

This is not to show off, but it will be too troublesome if the judgment is wrong, and it will affect the direction of the entire investigation.

Fortunately, there was no need to wait long. Cui Qishan gave an order and the policemen who participated in the battle quickly expanded the soles of their shoes and gathered the electronic versions first.

Jiang Yuan looked at them one by one. After reading them, he squatted on the ground to take a look and said, "What can I see here?"

Cui Qishan immediately took out his notebook and took notes.

"First, there should be two suspects. One male and one female."

"The male is about 20 years old, and the female may be a little older, 21 years old, no more than 22 years old."

"The male suspect is 173 centimeters tall and has a standard build. The female suspect is 165 centimeters tall and 50 kilograms."

"The two suspects were very close and the contact distance was very short. There was likely to be a hug."

After saying this, Jiang Yuan stood up and said: "As for the time of death, it was mid-afternoon yesterday, around 2 o'clock in the afternoon."

"Understood, I'll go talk to the detective." Cui Qishan closed the notebook with a snap. Not to mention the time of death, the two suspects would have hugged each other. If they appeared under surveillance, it would be very obvious. , much easier to screen than height and weight alone.