civil forensic

Chapter 1272 Contradiction

Chapter 1272 Contradiction

The high-speed centrifuge was humming, and Jacob's heart was itching.

What are those non-body residues? Can they help solve the case if they are centrifuged out?

Jacob didn't think it was that reliable. The body was dumped in the sewer, so it was possible that it was contaminated with something dirty.

Of course, it is also possible that they are some particles related to the case, but the final results of particle analysis are often at the elemental level. It is difficult to say what conclusions can be drawn from this little bit of information.

Jacob looked at Jiang Yuan's expression again, and felt that he was extremely calm, and couldn't help but ask: "What do you think it is?"

Jiang Yuan looked at Jacob strangely and said, "You can only know it if you use an electron microscope."

"Huh, I thought you already expected it." Jacob was still stunned by Jiang Yuan during the autopsy.

Jiang Yuan shook his head: "For trace evidence, real-time analysis is the best approach. There is no point in making guesses in advance."

"That's true...but...what if the analysis doesn't yield any results?" Jacob was a little confused.

Jiang Yuan said nonchalantly: "If we can't come up with any conclusions from the analysis, we can only look for other directions."

For Jiang Yuan, the skill tree he currently has is already very comprehensive, and he has a certain amount of room to handle any clues. Of course, it is true that some directions cannot be handled perfectly, but he can come up with unlimited technical solutions.

Therefore, from Jiang Yuan's perspective, the main line is to collect as many clues as possible and then deduce them along the way. Whether there are any clever ideas in the middle is more about saving time and energy and may not necessarily affect the final result.

In Jacob's eyes, Jiang Yuan, who was almost perfect, should have been a man like Zhuge Liang who had a perfect plan... This model of deducing the answer based on the result obviously did not fit the performance in Chinese storytelling...

At this time, Master Wei, who was grinding beans with a hand-cranked coffee machine, walked over and said, "Master, you are confident that any result can become a clue."

Jacob was stunned when he heard what the translator regurgitated.

At this time, the centrifuge gradually stopped.

The technician stepped forward, removed the centrifuge tube from the centrifuge, opened the lid with sterile tweezers, and then transferred 30 microliters to the slide with a micropipette.

Next, the sample was placed in a vacuum coating machine and coated with a 10-nanometer gold layer. This is because non-conductive samples need to avoid charge accumulation that affects imaging.

After all this trouble, the slide is placed into the vacuum chamber of a scanning electron microscope worth millions.

Most of the equipment used in Malaysia is produced in Europe and the United States. They are expensive and have excessive power, but they are really easy to use.

The final results came out soon.

"Barium, antimony, and aluminum, a total of three elements." The technician gave the answer on the spot, and said: "This is most likely the residue of a bullet. Barium nitrate and antimony sulfide are commonly used in bullet primers."

Having said that, any intern would understand why the murderer chopped the victim's chest into pieces.

Malaysia is also a country that bans guns.

The previous smuggler Cai Dachui had a gun, but it is still difficult for ordinary people to get a gun.

In other words, by following the gun, we can also search for the murderer, or at least narrow down the scope of the murderer.

On the other hand, the murderer may have dismembered the body in order to find the bullet.

Several people at the scene fell into deep thought.

Soon, Nicha and Zhong Renlong came after hearing the news.

At this time, the technician also produced a report and handed it to Nicha.

Nicha read it over and over again with an expression of relief on his face. Jiang Shen was still the same Jiang Shen, so he felt relieved.

"As expected of God Jiang, this may change the logic of dismemberment in this case." Nicha mainly flattered and explained the case: "We have already investigated the residents nearby, and they all said that they did not find anything unusual, let alone heard any gunshots. In this case, can we consider that the murderer came from a distance and dumped the body."

"It's very likely." Jiang Yuan agreed. Although modern buildings have good sound insulation measures and there are things like silencers, using an axe to dissect the body and remove the bullets at the scene does not seem very professional.

"But if that's the case, why dump the body in a busy area in the city? If it was dumped in a more remote place, it might not be discovered so quickly." Nicha raised the question again, and it made sense.

Jiang Yuan nodded slowly: "This is indeed a contradiction."

The contradiction may be the key to solving the case, and Nicha smiled smugly.

Jiang Yuan turned around but did not continue the analysis. He said, "Also, do a trace evidence test on that piece of plastic sheet. Use an electron microscope to examine it."

"Have you ever cut it off?" The technician next to him was a little hesitant. This workload was too much. The high magnification of the electron microscope meant that the area it could scan each time was limited.

Jiang Yuan shook his head and said, "The body was wrapped in plastic, so everything was mixed up. The trace evidence found in any particular location is meaningless. Take a part from the plastic sheet, brush the surface again, and run it through a centrifuge and an electron microscope to see what you can find."

The technician next to him thought about it and immediately understood: "If the murderer pressed the victim on the plastic sheet and shot him, or made the victim kneel on the plastic sheet and then beat him to death, it is possible to find gunshot residue on the plastic sheet. Otherwise, it is very likely that the body was moved here."

Several detectives present also reacted.

Nicha immediately said, "Execution-style shootings are indeed different. We have encountered similar cases recently."

In the city, when it is necessary to kill someone, pressing the person on a plastic sheet or making them kneel on a plastic sheet is the cleanest way to kill. As long as the blood is washed away, there will be very little other human tissue exposed.

Killing someone in the wild wouldn't be that troublesome, as the blood and small amounts of human tissue would be taken care of by nature's decomposers.

The execution-style shooting also shows that it was not manslaughter or self-defense, but must have been active murder, which still has considerable value in the Malaysian courts.

In addition, the execution-style shooting also proves from another aspect that the murderer had a certain level of martial arts skills and was most likely a professional or semi-professional - which is inconsistent with the fact that the body was dumped in a busy urban area.

Just as Nicha and the others were getting excited and wanted to seriously think about the connection, Jiang Yuan stood up and said, "Next, I'm going to cook the body parts and take the bones for anthropological analysis. It will probably take a day."

"Ah... OK." Nicha responded quickly, and then said, "We have prepared dinner, which is our Malaysian specialty hot pot. How about eating first and then cooking the body?"

"We'll have dinner once the body is cooked. It should take about the same amount of time to cook until the bones fall off." Jiang Yuan asked Jacob, "Do you have a large water bath pot?"

"We can't cook the ones as big as a person. We may have to cook them separately. They are already cut open..." Even though Jacob is a forensic doctor, he felt a little bit hellish when he said this. He stopped immediately and called his subordinates, saying, "We have several pressure cookers and a small water bath. We can probably cook about three-quarters of the meat... It should be no problem to cook about 80 kilograms. The rest may have to wait for the second pot."

Cooking it twice is a bit of a waste of time, because forensic anthropology only requires bones, and it takes too long to cook the meat to the point where the bones and meat are separated, especially since they are all super large pieces of meat.

As for cutting the dismembered body into smaller pieces... the forensic doctor doesn't like to do that kind of thing either.

Jiang Yuan then turned to look at Nicha and said, "You said you prepared a hot pot. Can you bring the hot pot over to cook the body first?"

At this moment today, Nicha really hopes that Jiang Yuan can't speak Indonesian.

Unfortunately, he still understood.

Nicha swallowed his saliva and said seriously: "Okay. God Jiang. I will ask them to bring the pot now."

Anyway, he doesn't like eating hot pot.