Chapter 54: Trace Evidence

Early in the morning. Google search reading

Jiang Yuan woke up from the bed, full of energy and relaxed, feeling as if he had not joined the task force.

In fact, there was no link for him to join.

As for forensic doctors, the Municipal Bureau has experienced old forensic doctors who only wear masks when they go to the scene of the corpse, and there are also doctoral forensic doctors who are conscientious and can dissect a corpse in two weeks.

As for criminal police, the criminal police detachment of the Municipal Bureau is mostly composed of talented people who have solved major cases, and there are also rough men like socialites.

And Jiang Yuan and others from Ningtai County were not used as cattle and horses, but were taken care of by the detachment leader. Knowing that a group of people have been squatting for so many days, they were given a few days to breathe.

Wuwuwu...

Wei Zhenguo called and shouted when he picked up: "Come down for breakfast. The fried dough stick shop at the door."

Jiang Yuan smiled bitterly, turned over, and still got up.

After the case was solved, the accommodation conditions in the new place were greatly improved. In the past, criminal police traveled on business trips and mostly stayed in double rooms and express hotels. This time, Wei Zhenguo booked single rooms for everyone, and the hotel was no longer the cheapest one. At least it shows that after the case was upgraded to the special case team, their funds were a little more.

Downstairs, the busiest place is the fried dough stick shop.

In the boiling hot oil, the rolling noodles kept stretching their arms and legs, and kept expanding and growing. In just a few seconds, its volume was several times larger than the original dough. The hot oil, like the rising desire, used the most intense means to make the two pieces of glued dough expand, make them bigger, change color, make them sweet, and also make them lose moisture, lose stickiness, and lose the original appearance of flour.

"Three fried dough sticks, a bowl of tofu brain, and a bowl of soy milk. Side dishes, an egg." Jiang Yuan touched his stomach and ordered a lot of things for himself.

Wei Zhenguo drank soy milk and said, "It's good to be young. I can't eat anymore."

"It's nothing anyway." Jiang Yuan paused and asked, "By the way, can I go for an autopsy?"

"It's all bones." Wei Zhenguo looked at Jiang Yuan and said, "Team Yu must still trust their own forensic doctor. Even if you do it, he won't recognize it."

"I can do bones now." Jiang Yuan just got the skill of forensic anthropology level 3, so there is no problem in going into battle.

Wei Zhenguo advised, "It's better not to go. If you go, you will just help their forensic doctor, and it's easy to take the blame if something goes wrong."

Mu Zhiyang next to him said, "It's not their own livestock, so they don't feel bad about using it. Besides, they don't know you."

"That's right, I was seconded here before, and the guys used it too hard." The criminal policeman Wen Ming who came with him was also full of emotion. Although everyone was used as livestock, it was obvious that they would cherish their own livestock more.

Jiang Yuan could only lower his head and drink soy milk.

In Ningtai County, his ability was obviously much stronger than his colleagues, but in a provincial capital like Changyang City, that was not necessarily the case, so there was no need to rush to do an autopsy.

Several criminal police officers ate breakfast quietly, and in a trance, they actually tasted a hint of the taste of peace and quiet.

"I want to follow their on-site investigation and look at the evidence." Jiang Yuan finished drinking the soy milk and had a new idea, saying: "I see that Director Liu has not made any relevant arrangements. Can we do it?"

"We can definitely do it." Wei Zhenguo asked puzzledly: "What do you want to do?"

Jiang Yuan thought about it and said: "I want to see Tan Yong's car."

"His car? You want to find out where he might have been through his car?" Wei Zhenguo could think of the reason as soon as he thought about it, but he was very pessimistic and said: "The Changyang City Criminal Police Detachment must have checked the car thoroughly."

"That's even better, we check it again, and it won't affect their investigation." So far, Tan Yong still has no intention of confessing, so relying on the existing evidence to investigate is the most direct idea.

The LV4 crime scene investigation skill is also Jiang Yuan's strongest skill at present.

By investigating Tan Yong's car, Jiang Yuan can find more clues - whether the case can be solved is a matter of probability, and the more clues found, the closer to solving the case.

Wei Zhenguo thought for a while and nodded: "Then I will accompany you to find the scene investigation."

...

Two hours later.

Jiang Yuan, Wei Zhenguo and Mu Zhiyang stood in front of Tan Yong's Pajero.

Cao Zhouquan, the captain of the scene investigation team, answered the phone and came out. He had a good impression of Jiang Yuan. When they met, he first smiled in a traditional way, which looked generous, and then half-jokingly said: "You are not convinced, what? We wiped Tan Yong's car. It is impossible to leave it untouched."

Jiang Yuan stood outside the cell in the basement and could not bear to go in. Cao Zhouquan talked about this matter for two days after returning. What he is talking about now is also this.

Wei Zhenguo chuckled twice and said, "Our Xiao Jiang has some ideas, Captain Cao, don't think too much."

"It's okay. If you want to do it again, I have no objection. Besides, you left such a large basement to us, so it's okay to clean the car for you again." Cao Zhouquan was generous in his actions and words. After speaking, he shouted again: "Du Lei!"

Then, turning around, Cao Zhouquan introduced: "Du Lei followed me to clean Tan Yong's car before. This time he will clean it with you."

Cao Zhouquan said he didn't mind, but he probably minded a little bit, so he called out his capable subordinate.

To be able to clean up the evidence of a murder case in a place like Changyang City, it must not be a weak hand.

Beep beep beep.

A self-balancing car came directly in front of Jiang Yuan.

"Du Lei." Du Qiang was wearing a police uniform on the self-balancing car. His waist was thin and long, as if it could be broken by a kick.

"Xiao Jiang and the others want to wipe Tan Yong's car again. You can follow them." Cao Zhouquan said directly.

Du Lei frowned and looked at Jiang Yuan and others, saying: "The inside is basically disassembled, and the wheel guards below are also disassembled..."

"I want to find trace evidence." Jiang Yuan had no intention of hiding it. While making gestures, he said: "Because this car has traveled on a bad road, it is more likely to leave debris, seeds and pollen, or hair and feathers at the scene inside. Take it apart and take a look, maybe you can find something."

The reason why his crime scene investigation skills have reached the level 4 is reflected at this time.

Jiang Yuan said it with confidence, and most importantly, what he said does make some sense.

Cao Zhouquan asked with some surprise: "Does your county bureau have a trace evidence laboratory?"

The laboratories of the Criminal Department are relatively simple, and many are at the level of a middle school chemistry laboratory. Usually, only the DNA laboratory is a little more expensive.

And what kind of laboratory to build is related to both the needs and the relevant personnel in the unit. It can be said that many laboratories are set up for people. With relevant talents, relevant laboratories are built. For example, the poison detection laboratory in Ningtai County was built because there was a demand for poison detection at that time, and because the captain of the Criminal Department Squadron, Lu Jianfeng, had this talent.

Cao Zhouquan was shocked when he heard Jiang Yuan confidently talk about the trace evidence laboratory. This thing is really expensive.

Jiang Yuan shook his head at Cao Zhouquan: "Ningtai County does not have a trace evidence laboratory."

Cao Zhouquan, a calm traditional handsome guy, was so angry that he laughed: "What do you say if there is no laboratory."

"You can use the one in Changyang City. Or send it to the trace evidence laboratory of the provincial department for inspection." Jiang Yuan said.

"The ones in the city are just for show. The trace evidence lab is complicated, expensive, and has many instruments and equipment. The ones made by the provincial department are not very good either." Cao Zhouquan shook his head and said, "So I said there is no need to dismantle it further. If nothing is found, it will be a thankless task."

"Whether trace evidence is feasible or not depends mainly on the extraction. Laboratory operation has a large margin for error." At this time, Jiang Yuan had no more room for humility and emphasized again, "As long as we extract something, we can find any laboratory and have a chance to make it."

"Okay." Cao Zhouquan had nothing to say and simply agreed. Anyway, he was not the one doing the work.