Chapter 206 Change
The direction of criminal investigation is an extremely important power.
Even if cadres from the provincial department arrive in Longli County, in theory, they only have the right to make suggestions and cannot simply take over the criminal police team. Only if the county agrees.
Many times, for many reasons, the direction of criminal investigation cannot be decided arbitrarily.
In criminal cases in Longli County, the first person responsible is always Hou Lejia, the team leader. There are many situations that he has to consider, and after making a decision, it is all his responsibility.
Jiang Yuan expressed all his opinions and went to the door to eat snail noodles.
Compared with instant noodles, one good thing about snail noodles is that it can be kept longer and soaked for a while, and the condition of the rice noodles is still acceptable. It even tastes better because it has been soaked for a while.
Jiang Yuan ate with a slurp. If it weren't for the layer of oil floating on the powder, which burned his mouth a little, he would have finished it in one breath.
Hou Xiaoyong also came out. Seeing Jiang Yuan eating so deliciously, he felt an inexplicable sense of accomplishment and said, "The snail noodles I cooked are still good."
Jiang Yuan thought about it for a while, sipped it, nodded, and said: "It's pretty good, professional level."
Hou Xiaoyong's snail powder skill is at level 1, which is much better than his spot survey.
Hou Xiaoyong laughed twice, squatted next to Jiang Yuan and introduced: "It's easy to cook snail noodles, just control the order, like this oil, it won't be interesting if you cook it for a long time, and the peanuts should be put in later, otherwise It won’t be crisp anymore…”
Jiang Yuan nodded, it was a serious bowl of snail noodles.
"Brother Jiang, can we clean up the scene later?" Hou Xiaoyong asked.
Jiang Yuan glanced at him and said, "I can just wipe it myself."
The purpose of wiping the scene again was to verify Jiang Yuan's own thoughts. On the other hand, it was to see if there were any other clues.
Similar to many scenes he had visited before, the probability of finding clues in a scene that had been dealt with once was very low. If he found it, it would usually be just clues.
What's more, the scene was broken into by onlookers in the early stages of the incident, and the value of the evidence was greatly reduced.
In view of this, Jiang Yuan no longer expects help from others.
Moreover, even if he asked for help, Jiang Yuan would rather ask Heizi for help than Hou Xiaoyong.
Hou Xiaoyong looked disappointed and hesitated at the door, unwilling to go in. He turned around and whispered: "Brother Jiang, I actually want to learn something from you and steal from you..."
"You can't learn anything from me. You think too much." Jiang Yuan interrupted Hou Xiaoyong cruelly.
"You don't need to teach me, I'll just stand in front of you and take a look."
"It's okay to look, but it's not necessary." Jiang Yuan breathed a sigh of relief: "Doing a spot survey is a meticulous job, and there are no martial arts secrets. Besides, I guess it will be difficult to find any more evidence at today's scene."
Hou Xiaoyong looked disappointed.
He really wanted to find a martial arts secret book. Martial arts secrets for on-site investigation.
However, from Jiang Yuan's point of view, it's not like the 6 players have no chance to practice, so there is no need to force learning.
Even if Jiang Yuan doesn't cheat, after a few months of practice, he can be close to the level of professional players, which starts at 9. This kind of 6 definitely opens up the reverse talent.
The requirements for crime scene investigation are actually not high. Being discerning, careful and patient are the basic requirements. It would be better if you have some ideas and the ability to associate.
But Hou Xiaoyong looked like he didn't care at all.
It doesn't matter, he is still a good boy of his mother and a good baby of society, he is just not suitable for crime scene investigation.
It may be more reliable for Hou Xiaoyong to recognize the reality early and change positions.
"By the way, forensic doctor Ye is here. Who is doing the autopsy?" Jiang Yuan asked again after finishing the snail noodles.
"Forensic doctor Wang Lan." Hou Xiaoyong said.
Jiang Yuan secretly said that it was true.
Wang Lan has been to at least half of the murder cases in Qinghe City, but Wang Lan has been to almost every murder case in Longli County.
There may be clues on the corpse, but when Wang Lan's forensic doctor found nothing, Jiang Yuan placed the autopsy in second place.
After patting his belly and peeing again, Jiang Yuan came back to change clothes and conduct an on-site inspection, while driving most of the people out.
Wang Zhong helped him, diligently dipping the brush, applying powder, and taking photos...
Chacha.
Click click click.
Jiang Yuan was doing the on-site investigation calmly, and his movements gradually became soothing and rhythmic.
Whether you can do it or not is one thing, elegance is the whole thing.
Hou Xiaoyong held the door open and looked at it for a while, but didn't understand. He wanted to wait for Jiang Yuan to look over, but lost his temper and left.
evening.
After the site investigation was completed, some human hair was found, and more were traces of rummaging at the site.
From this aspect alone, the element of burglary is strengthened.
After all, there is no need to steal your own property if it is done by an acquaintance such as your husband. Moreover, there is no need to search so many places, which does not extend the time to commit the crime and makes it easier to be discovered.
However, the possibility of acquaintances deliberately confusing the public cannot be ruled out. Or maybe the alien hired by the husband is looking for some extra income and may be rummaging around.
After properly delivering the evidence to the evidence room in Longli County, Jiang Yuan went to their imaging office.
There are many ways to find burglars, but surveillance is the most reliable.
In fact, mobile phone positioning can also be used. Nowadays, it is very convenient to locate through base stations, but this method can usually only prove that someone is in a certain place. It is good for investigation, but not enough for evidence.
For ordinary burglaries, the police are too lazy to use this method. If you don't tell the technical detective, you have to look for evidence again. It is equivalent to licking both ends of the bitter melon, using it in the wrong place and choosing the wrong function.
Of course, the more traditional method of finding fingerprints or DNA evidence such as hair and sweat is also a better solution. It is more of a test of the investigation ability. On the other hand, thieves who have been caught once in this way will often grow after they come out of the prison university.
By wearing gloves, overalls, etc., this type of evidence can often be avoided perfectly. However, the possibility of leaving sweat remains. The thicker the clothes, the greater the possibility of sweating during the crime. It depends on whether the investigation can find it.
In a normal criminal investigation environment, the police system's investment in burglary is average. In fact, it prefers the model of taking out the carrots and bringing out the mud, which is to just sit and wait.
Otherwise, there are more cases where people are looking for stolen goods.
In contrast, searching for suspects through surveillance is a very labor-saving forward crime-solving model.
The Hou Le family looked a little excited. When they saw Jiang Yuan, they whispered: "There have been a series of burglaries recently. Moreover, in most cases, bicycles and electric vehicles were stolen. It should be the same person. .”
"After stealing bicycles and electric scooters, use them to carry things?"
"Yes, when he steals, he usually finds the keys, installs a few more big items like computers, and brings a bicycle or electric car with him. If he can't find the keys, he should also be able to unlock the door."
Generally, recidivists have almost fixed criminal patterns.
This is just like ordinary people going to work. After working for a long time, what time to get up in the morning, which route to take, which car to take, in the end it becomes a fixed pattern.
A criminal's work is equivalent to going to work. Even if he wants to avoid being punished, he cannot always think about changes.
I don’t have that strong ability to innovate either.
If he could come up with new ideas at every turn, he would have become a capitalist long ago, and there would be no time for burglary.
A successful criminal will often strengthen his criminal pattern, because after repeated trials, he will definitely feel that his criminal pattern is advanced.
Similarly, you can also refer to Japanese short movies. In the same series, even the action rhythm is not changed, just change the heroine.
"Is there any surveillance video of the suspect?" Jiang Yuan asked directly.
If you commit multiple crimes, the probability of completely evading surveillance is very low.
Moreover, criminals who commit burglaries do not need to be so cautious. It's not like people die every time.
Hou Lejia nodded, asked his subordinates to show it, and said: "I'm still watching other videos, there should be more later."
As he spoke, a black figure appeared on the screen.
The picture is a bit dirty, you can see the movements but not the faces.
"Can you confirm the identity of the suspect?" Jiang Yuan asked again.
"Still thinking of a way." Hou Lejia is relatively confident.
As long as the surveillance camera captures it, there are still many ways to continue to find people.
Jiang Yuan looked at the time and saw that it was already 10 o'clock in the evening. If he delayed any longer, he would definitely have to stay up all night today.
Jiang Yuan simply said: "Get me a computer and I'll adjust the pictures."
I have been chewing ginseng code words recently, and the effect is quite good. Gradually, I can feel a hint of sweetness from dry chewing ginseng... Today I found that I had eaten half a can of ginseng, and I felt that I had eaten a bit too much, so I took a piece under my tongue at night, and it seemed to have a good effect...