Mu Zhiyang also lay down and looked at the fingerprints carefully.
The incomplete fingerprints are mainly located at the fingertips. The middle part is not pressed very comprehensively, and the total area is not large.
"Is it too long?" Mu Zhiyang was a little disappointed. More than 200 brushes were used, but the brushes were still expensive copper powder, but in the end, no complete fingerprints were produced.
Jiang Yuan first took out the camera and took a photo as clear as possible. Then he straightened up, looked directly at the captured fingerprint pattern, and said slowly: "It's a bit incomplete, but I should be able to piece together a dozen features."
point."
Mu Zhiyang stood on tiptoe and looked at the fingerprints, and said in surprise: "The shape is not complete, and the lines are blurry. Can you still come up with a dozen characteristic points?"
"You should see the fingerprints I made on the arson case a few days ago." Jiang Yuan leaned over and took a few more fingerprint photos, and then started taking photos of the scene.
Mu Zhiyang slapped his head: "You said that my association ability... well, that's you. If someone else came over, this case would be really difficult to solve."
If the same fingerprints are taken out by the county bureau, the trace inspection will definitely pretend to be dismissive. Otherwise, what should I do? With such a dog-like appearance, no matter whether it is Lao Yan or Xiao Wang, they will not match.
from.
Even if the fingerprints were more complete, the two of them probably wouldn't be willing to do it.
Complete fingerprints can be matched with your hands, but the more incomplete the fingerprints are, the more disturbing they are. If the fingerprints are incomplete to the extent of an arson case, it will not only be disturbing, but it may also be a waste of effort, and the loss will require an expert.
The effort of level mark inspection...
If a case was solved using this method of burning brain cells, if only a few electric vehicles were stolen, the police officers handling the case would feel embarrassed.
Jiang Yuan did it by himself, so he didn't have so many long words. He said politely: "I only know fingerprints. If the police station checks, there should be other ways."
"Even if there is a way, it may not be possible to solve the problem. Many of the thefts of electric vehicles are committed on the fly. They stay in one place for a period of time. After spending all the money, they feel it is dangerous, and then go to another place. It is like traveling.
." Mu Zhiyang felt a little envious for no reason.
Zhou Ta happened to come back after finishing the on-site notes. Hearing the second half of Mu Zhiyang's sentence, he agreed: "It is indeed true. Some people also know that rabbits do not eat grass near their nests."
"I'll compare the fingerprints as soon as possible." That's all Jiang Yuan can do. If it's delayed for a long time, even if the fingerprints are compared and the suspect escapes, it will still be a problem - this is another trouble in reality, even if
Knowing where the suspect is, the procedures for handling the case in another place, the time and energy spent, and the money burned are all troubles.
Imagine two police officers, probably four police officers, driving to another city perhaps thousands of kilometers away, communicating with the local criminal investigation department, and requesting someone to assist in the investigation and arrest of the criminal suspect. In the process, they will be charged for gas and tolls.
, I spent a lot of money on overtime and room and board, but what I 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 feel panicked.
.
Compared to the young Mu Zhiyang, Zhou Ta was even more unable to understand Jiang Yuan.
However, he was used to doing more and talking less. He helped Jiang Yuan organize things and rushed to the parking area outside the community without stopping.
When they arrived at the place, the three of them each put on gloves and masks and began to dig through the sewer, trying to find the cigarette butts and garbage seen in the video.
Three people and two big bags quickly stood up with satisfaction.
"With the pollution like this, I guess 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 in a small evidence bag.
Jiang Yuan did this action for more than a quarter of an hour.
Mu Zhiyang looked tired, took off his gloves, covered his nose and let go in disgust, saying: "The garbage water has been soaked in, how can we still check the 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 from 10-year-old cigarette butts."
"So powerful? Why? Did it get soaked in when you sucked it?" Mu Zhiyang followed his master to solve crimes 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 smoking time, and on the other hand, the structure of the cigarette butt is good and can resist external erosion. When the DNA is tested, it will be easier to tear out the cotton inside strips.
come out."
"So we always say in the police station that you need to learn how to commit crimes. You said, in this day and age, there are still people who throw cigarette butts at crime scenes. We usually work on cases too, each one is stupid, and there is evidence everywhere...
"Zhou Ta shook his head with a smile.
Compared to Zhou Ta, the veteran auxiliary police officer, Mu Zhiyang saw things more clearly and said: "It's not that they want to keep evidence, they just don't care. I once followed my master to investigate a murder case and encountered it once. The murderer killed someone.
, ran out of the alley, with blood still in his hands, smoked a cigarette, and threw the cigarette butt in front of him after smoking. It’s not that they didn’t know, it was because they couldn’t think of this at the time. They were too nervous.”
"That makes sense. On the contrary, it's easier to do a theft case, your thinking is quick, and it's hard to find evidence." Zhou Ta said.
"Those who commit theft have to repeat it many times and have a high degree of proficiency. Generally, those who engage in murder are done with it after one or two attempts and have no chance to practice." Mu Zhiyang began to summarize.
"Murder is also complex, the scene is often messy, and there are corpses... It's equivalent to a big project. What was stolen is a small project. People who start working on big projects are definitely prone to making mistakes." Zhou Ta also summed up some experience.
Jiang Yuanyang opened the evidence bag and said, "I don't know if I can compare DNA when I go back."
"You should do your best to obey fate, that's what it is." Zhou Ta followed for such a long time, hoping for results. But compared to success, he was more sensitive to the experience of failure.
Jiang Yuan only nodded slightly. Speaking of which, this was his first time to complete a case.
