civil forensic

Chapter 37 Forensics
Mu Zhiyang also got down on his stomach and looked at those fingerprints carefully.

Incomplete fingerprints are mainly located at the fingertips, the middle part is not fully pressed, and the total area does not seem to be large.

"Is it still too long?" Mu Zhiyang was a little disappointed. There are more than 200 brushes, and the copper powder that is expensive at first sight is still used, but in the end, no complete fingerprints are produced.

Jiang Yuan first took out the camera, took a photo as clear as possible, then straightened up, looked directly at the fingerprint pattern, and said slowly: "It's a bit disabled, but it should be possible to gather more than a dozen features. point."

Mu Zhiyang looked at the fingerprints on tiptoe, and said in surprise: "This shape is not complete, and the lines are also blurred. Can you still come up with more than a dozen feature points?"

"You should look at the fingerprints of the arson case I did a few days ago." Jiang Yuan leaned over and took a few fingerprint photos, and then began to take photos of the scene.

Mu Zhiyang slapped his head: "You said my associative ability... well, it's you. It's really hard to handle this case with someone else."

If the same fingerprint was found by the county bureau's spot survey, the trace inspection would definitely have to pretend to be dismissive.Otherwise, what should I do? If you become such a dog, no matter whether it is Lao Yan or Xiao Wang, they will not be able to match.

Even if the integrity of the fingerprints were higher, the two of them would probably not be willing to do it.

Complete fingerprints can be matched with hands. Incomplete fingerprints are more disturbing as they become more deformed. The degree of incomplete fingerprints is not only troublesome, but it may also consume mental energy, and it must be an expert. The effort of level trace inspection...

If a case solved by burning brain cells like this is just a few electric cars stolen, the police handling the case will feel embarrassed.

Jiang Yuan did it himself, so he didn't have so many long-winded words, and said politely: "I only know fingerprints. If the police station checks, there should be other ways."

"There is a way, but it may not be able to be solved. Stealing electric cars, many of them commit crimes on the move. They stay in one place for a while, and after spending all the money, they feel dangerous, and then go to another place. It's like traveling. .” Mu Zhiyang inexplicably felt a little envious.

Zhou Ta just came back after finishing the on-site record. Hearing the second half of Mu Zhiyang's sentence, he agreed: "Indeed. Some people also know that rabbits don't eat grass beside their nests."

"I'll compare the fingerprints as soon as possible." That's all Jiang Yuan can do.After a long delay, even if the fingerprints are compared, it will be troublesome for the suspect to run away—this is another trouble in reality, even if you know where the criminal suspect is, the procedures for handling the case in different places will consume time and energy. With burning funds, it's all trouble.

Imagine that two policemen, probably four policemen, drive to another city perhaps thousands of kilometers away, communicate with the local criminal investigation department, and request to send someone to assist in the investigation and arrest of criminal suspects. A lot of money was spent on overtime pay, board and lodging, and the one who brought home was a petty thief who stole several electric cars, and he might not be able to catch anyone... Whoever thinks about it will be in a panic .

Compared with the young Mu Zhiyang, Zhou Ta couldn't understand Jiang Yuan even more.

However, he was used to doing more things and less talking, and helped Jiang Yuan organize his things before rushing to the parking area outside the community without stopping.

When they arrived at the place, the three of them put on gloves and masks, and began to dig the sewer, trying to find the cigarette butts and garbage seen in the video.

Three people, two big bags, soon stood up satisfied.

"The pollution is like this, probably only cigarette butts can be used." Jiang Yuan sighed.There were a lot of cigarette butts in the sewer, so he took them all out and collected them one by one with a small evidence bag.

For this action, Jiang Yuan did it for more than a quarter of an hour.

Looking tired, Mu Zhiyang dragged his gloves, covered his nose and let it go in disgust, and said, "The garbage water has been soaked in, can you still check DNA?"

"It should be no problem. Cigarette butts have a strong ability to preserve DNA." Jiang Yuan carefully observed the cigarette butts, and said: "As long as they are not moldy, DNA can be detected in 10-year-old cigarette butts."

"So powerful? Why? Did it get soaked in while inhaling?" Mu Zhiyang followed Master to solve the case all day long, but he never paid attention to this.

Jiang Yuan nodded and said: "On the one hand, it is because of the long time of smoking, and on the other hand, the structure of the cigarette butt is good, which can resist external erosion. When it comes time to test the DNA, it is easier to tear out the cotton inside. come out."

"That's why we always say in the police station that crime needs to be learned. You said that in this day and age, there are still people who throw cigarette butts at the crime scene. We usually do the same when we do cases. Everyone is stupid, and there are evidences everywhere... "Zhou Ta smiled and shook his head.

Compared with Zhou Ta, the old auxiliary policeman, Mu Zhiyang saw it thoroughly, and said: "They don't want to leave evidence, they just don't care about it. I have encountered a murder case with Master once, and the murderer killed someone , ran out of the alley with blood in their hands, smoked a cigarette, and threw the cigarette butt in front of them after smoking, they didn't know, but they couldn't think of it at the time. They were too nervous."

"It makes sense to say that, but it's easy to do a theft case, and the thinking is quick, so it's hard to find evidence." Zhou Ta said.

"Those who do theft have a lot of repetitions and a high level of proficiency. Generally, those who do homicide are finished once or twice, and have no chance to practice." Mu Zhiyang began to make a summary.

"Murder is also complicated. The scene is often messy and there are dead bodies... It is equivalent to a big project. The theft is a small project. People who start to work on big projects are bound to be prone to mistakes." Zhou Ta also summed up some experience.

Jiang Yuan lifted the evidence bag and said, "I've gone back, and I don't know if I can compare it with DNA."

"Do your best to obey the destiny, that's the way it is." Zhou Ta followed for such a long time, hoping for results.It's just that he feels more about the experience of failure than success.

Jiang Yuan only nodded slightly. Speaking of which, this is the first time he has run a complete case.

　Without this chapter, I suddenly feel so lonely

　　
　
(End of this chapter)