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 for a little 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 any clues in this kind of 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 did not expect help from others.

Moreover, even if he asked for help, Jiang Yuan would rather ask Heizi for help than Hou Xiaoyong.

Hou Xiaoyong's face was full of disappointment, and he 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. Moreover, 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 for his mother and a good baby for 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 his position.

"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 homicide cases in Qinghe City, but Wang Lan has been to almost every homicide case in Longli County.

There may be clues on the corpse, but when Wang Lan's forensic doctor found nothing, Jiang Yuan put 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 conducting on-site inspections in a calm mood, 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.

Mobile phone positioning is actually OK. Now it is very convenient to use base stations for positioning, but this method can usually only prove that someone is in a certain place. It is good for investigation, but it is not enough for evidence.

For general burglary, the police are too lazy to use this method. Not only do they have to find a technical detective, but they also have to find evidence again, which is like licking both ends of a bitter melon. They use the wrong place and choose the wrong function.

Of course, the more traditional methods of finding fingerprints, hair, sweat and other DNA evidence are also better solutions. It is more of a test of the ability of on-site investigation. On the other hand, the thieves who have been caught once in this way often grow up after they come out of prison university.

By wearing gloves, overalls and the like, such evidence can often be perfectly avoided. However, the possibility of leaving sweat still exists. The thicker the clothes are, the greater the possibility of sweating during the crime. It depends on whether the on-site investigation can find it.

In the normal criminal investigation environment, the police system's investment in burglary is mediocre. In fact, it prefers the mode of taking out the carrot and the mud, that is, waiting.

Otherwise, there are many cases of tracing back through stolen goods.

In comparison, finding suspects through surveillance is a very labor-saving positive case-solving model.

Hou Lejia looked a little excited. When he saw Jiang Yuan, he whispered: "There have been a series of burglaries recently. Moreover, in most cases, bicycles and electric bikes were stolen. It should be the same person."

"After stealing bicycles and electric bikes, they were used to carry things?"

"Yes, he usually finds the key when he steals, and then packs more large items such as computers, and takes bicycles or electric bikes. If he can't find the key, he should also unlock it."

Generally, recidivists have a more or less fixed crime pattern.

This is like ordinary people going to work for a long time, getting up in the morning, taking which route, and taking which car, in the end, it is a fixed pattern.

Criminals working is equivalent to going to work. Even if he wants to evade the crackdown, he can't think of changing it at every turn.

He doesn't have such a strong ability to innovate.

If he could think of new ideas at every turn, he would have become a capitalist long ago, and he would not have the time to commit burglary.

A successful criminal will often strengthen his crime pattern, because he will definitely think that his crime pattern is advanced because he has been tried and tested many times.

Similar references can also be made to Japanese short films. In the same series, even the action rhythm is not changed, but the heroine is changed.

"Is there any surveillance video of the suspect?" Jiang Yuan asked directly.

The probability of completely escaping surveillance after committing crimes many times is very low.

Moreover, there is no need for criminals who break into houses to be so cautious. It's not like people die every time.

Hou Lejia nodded, asked his subordinates to play it, and said: "I'm still watching other videos, there should be more later."

As he spoke, a black shadow appeared on the screen.

The picture was a bit dirty, and the action could be seen, but the face could not be seen.

"Can you confirm the identity of the suspect?" Jiang Yuan asked again.

"I'm still trying to find a way." Hou Lejia was relatively confident.

As long as the surveillance camera captured it, there were still many ways to continue looking for people.

Jiang Yuan looked at the time. It was already 10 o'clock in the evening. If he delayed any more, he would definitely have to stay up all night today.

Jiang Yuan simply said: "Find me a computer, I'll adjust the picture."

Recently, I chewed ginseng while typing, and the effect was quite good. Gradually, I could feel a hint of sweetness from chewing dry ginseng... Today I found that I had eaten half a can of ginseng, and I felt that I had eaten a little too much, so I put a piece under my tongue at night, and it seemed to work well...