"Xiao Wang also likes tinkering with computer software. In the past, the cases our county came to assist in the investigation were all arranged by Xiao Wang." Lao Yan endorsed Xiao Wang, and by the way, he rectified the name of the only trace inspection company in the county.
.
Wang Zhong smiled shyly and said modestly: "I can't compare with what forensic doctor Jiang does. You are the one who does the hard work of doing fingerprints. I mainly just run the fingerprint database."
The fingerprint database is constantly updated, and the main body responsible for the update is the fingerprint inspection police in various places. They are responsible for taking pictures of the collected fingerprints, filing them, filling in instructions, and sometimes need to perform manual processing before putting them into the fingerprint database.
In addition, fingerprints from old cases before the use of computer systems also require manual verification and other operations before they can be stored in the database.
From time to time, taking out the fingerprints of old cases and running them is a kind of database running. A suspect who could not be matched before may be matched one day due to a drunk driving incident or a fight. The suspect may even apply for a temporary residence permit.
And so on, it is possible for lonely fingerprints to be matched, which can be described as the beauty of adulthood.
In addition, some people have committed crimes in other places and cannot find a match in the local fingerprint database. However, there may be fingerprint information left in the fingerprint database in other places. Such fingerprints are not necessarily complicated. In many cases, the police doing trace inspections
After receiving the co-investigation letter, I use the most traditional method to roughly mark the characteristic points, and then run the fingerprint database. If there are jujubes but not jujubes, take two shots, and you may win.
Running warehouses is also a daily routine for most ordinary trace inspection policemen. If Jiang Yuan didn't have a system, it would be good to be able to run warehouses in the first few years. Therefore, he said warmly and sincerely: "It doesn't matter whether the cat is white or black, as long as the mouse is caught
Just a good cat."
Wang Zhong immediately felt that Jiang Yuan, a young man, was good and capable, so he made an analogy even more modestly: "When it comes to catching mice, you are a raccoon cat, and I am just a ragdoll cat at best."
Everyone present looked at Wang Zhong's rough-skinned cheeks due to his frequent appearances and staying up late, and then at Jiang Yuan, who was fair and elegant, and fell into euphemistic contemplation.
"Did you just say there was a case?" Wu Jun reminded.
"Yes, yes." Wang Zhong sorted out his words before saying: "It's an old case from more than ten years ago. When I used to run a warehouse, it left a deep impression on me. The case is simple to say, it's just a few high school graduates drinking together.
, was drunk, and had a conflict with a young man passing by. As a result, he picked up a stool and knocked it over. Unfortunately, the student who was beaten was blinded in one eye, which resulted in serious injuries. "
"You said you were blind in one eye, so I remember it. At that time, the college entrance examination was still in July. When the scores came out, the weather was hot, and there were students everywhere who drank beer and made trouble. The college admission rate was low back then, and there were no students.
Students who go to other places and repeat students are looking for trouble everywhere. The most serious case is this case. The student who was beaten was an excellent student and passed the junior college entrance examination. It is probably the reason why he was beaten." Wu Forensic Doctor recalled the past with emotion: "It's still the case.
Forensic appraisal done by my master."
"It's this case. It was speculated at that time that the suspect might be a student from out of town who came to play, or he might have come to work, and ran away when something happened." Xiao Wang nodded.
More than ten years ago, he was a little far away from Yan Ge. He had not read the files and asked directly: "Didn't a special task force be set up?"
"The county set up a special task force, but it mainly focused on searching and investigating, and in the end the suspect was not identified."
"Where is the city?"
"Not in the market."
"Before the sinking was launched, the Qinghe Municipal Bureau basically did not do business." Wu Jun explained. In the early years, the provincial department and the municipal bureau provided business guidance instead of directly doing business. To put it more simply,
They do not handle cases directly.
For example, the provincial department has only a few hundred people in total. Even major cases cannot be handled. Even daily work requires the secondment of people from the districts and counties below. It is better to directly transfer the cases to the districts and counties and do some technical and organizational work themselves.
Work.
The municipal bureau's manpower shortage is slightly better. In recent years, it has also been required to move down to handle cases directly, etc. However, for backward areas like Anping City and even Shannan Province, demands are demands and reality is reality.
Therefore, not only cases of intentional injury more than ten years ago cannot reach the city bureau, but even now, serious injury cases must have a huge impact before a city-level task force is organized. Of course, if it is a homicide case, then
That’s two things to say.
"There are also problems with fingerprint clues." Xiao Wang continued to introduce, saying: "At that time, fingerprints were extracted from the legs of the stool used by the suspect as the murder weapon, but the legs of the stool were made of round steel pipes..."
"Oh..." Yan Ge and Jiang Yuan both showed astonished expressions. Taking pictures to extract cylinder traces has always been a major problem in criminal investigation. The curved shape causes serious deformation of fingerprints, and the curved surface makes it difficult to detect traces when taking pictures.
Severe reflection... Although fingerprints can still be obtained, the completeness and accuracy of the fingerprints are greatly reduced.
"When the fingerprints were taken back then, they were probably fixed using the segmented shooting method, and the deformation must have been quite large..." Yan Ge guessed, and then sighed: "At that time, we also went to train in the shooting method of auxiliary cylinder surface expansion, that is,
It’s a special machine that shoots while turning in circles. In the end, only the provincial capital bought it. I had to apply for it a few times if I wanted to use it. Now it’s ready. I can turn on my phone and take a panoramic shot. It’s much easier to use than that one!”
Jiang Yuan laughed dumbly, opened the software on the computer, and found the case.
The four fingerprints left by the suspect soon appeared on the screen, and several people raised their heads and looked at it.
In just a few seconds, both Yan Ge and Wang Zhong gave up hope.
The clarity of the image is acceptable, but there are many breakpoints. Needless to say, it must be difficult to judge. The most important thing is that there are obvious extensions on the left and right sides of the fingerprint, and the lines in the deformed parts are obviously wider and thicker.
, in this case, the image must be deformed first, and then the fingerprints can be marked. In terms of difficulty, it is definitely a high-level requirement.
Just make a strict judgment, let alone him and Xiao Wang. Even if they are sent to the city or even the province, it is hard to say whether there will be any results.
Wang Zhong has been paying attention to this case since he ran the warehouse. At this time, he said with great interest: "The advantage of this case is that, except for these few consecutive fingerprints, all the fingerprints on the murder weapon have been eliminated. In addition, the original
We hired a portrait artist to draw a portrait of the suspect. Even though it has been so many years, we have fingerprints and a portrait, so it should be easier to confirm."
Everyone present couldn't help but nod. This is indeed an advantage. The number of backlog cases that can be solved through fingerprints is limited, and it is even more difficult to directly convict. In addition, there are portraits, parties and witnesses, if you really win the competition
Fingerprints can be used to arrest people and close the case directly.
Of course, the premise of everything is that the fingerprints can be compared.
Lao Yan, Xiao Wang, and Wu Jun all looked at Jiang Yuan.
Jiang Yuan smiled unconsciously.
"It seems that Jiang Yuan is confident." Xiao Wang suddenly felt a little envious of Jiang Yuan.
"I'll give it a try." The main reason why Jiang Yuan smiled was that the fingerprints left by the suspect happened to be bow-shaped patterns. If not, he would have to evade the case.
As for the difficulty, based on his experience of doing fingerprints in the past two days, it seems to be within the range. It's just unlikely that it can be done overnight.
Wu Jun laughed loudly at this time and said: "If you solve a case, you should solve it, and if you rest, you should rest. Don't be anxious today. Anyway, there is a backlog of cases, and it won't take more than one or two days..."
He interrupted on purpose. In any case, Yan Ge and Wang Peng are both professional trace inspection policemen in the team, but Jiang Yuan is a forensic doctor and his apprentice. Let the two trace inspection policemen look at Jiang Yuan, a young man
Taking fingerprints is not always easy.
"Indeed, you are probably exhausted from working with corpses in the past two days. Come here in leisurely time." Yan Ge also laughed and pulled Wang Zhong away.
Wu Jun and others went out, took a cup of tea and drank water, and said to Jiang Yuan: "Don't be anxious, it's lunch break soon. It's time to clean up and eat. Do you want to cook another rice today?"
Jiang Yuan was really not in a hurry and asked, "Can I cook rice in the team canteen?"
Wu Jun waved his hand: "No need to look for them, the police dog squadron also has a kitchen."
