civil forensic

Chapter 648 Search
Flying a drone in the capital, especially a drone with a camera in a reasonable and legal manner, is still a bit challenging.

However, the police officers in the Zhengguang District Bureau still have some methods and execution capabilities. Several young people from the graphic investigation team, carrying a few drones, carefully followed the area within two kilometers of the donation box. flew up.

Two kilometers does not sound far, but it is actually equivalent to a circle with a radius of 2 kilometers, covering an area of ​​more than 12 square kilometers.

In the capital city, how many buildings are there within 12 square kilometers?

As far as this case is concerned, places such as gardens, cemeteries, parks, botanical gardens, and zoos cannot be easily ignored, and they must be carefully scanned.

That is to say, the Beijing Bureau has sufficient manpower. The detachment leader Tao Lu mobilized more than 100 people from the three teams to watch the video, but he did not delay the progress. In the next few days, everyone returned to normal work and rest, watching the video at work and leaving work There is no delay in going home to train the children.

A headless case was completed step by step, and none of the criminal police in the special case team was hospitalized halfway through. One can imagine how sufficient the Zhengguang Bureau is.

For several days in a row, the criminal police officers of the graphic investigation took thousands of pictures and found hundreds of illegal buildings, but none of them found any green plants that met the requirements.

Similar to the previous cases, as time went on, everyone's confidence was inevitably weakened.

Everyone knows in their hearts that the longer the time, the less evidence there will be.Not to mention the most important corpse in this case, it is likely to be disposed of during this period, that is, the plant that everyone is looking for is also likely to be disposed of.

When Tao Lu thought about this level, he couldn't help finding Liu Sheng, and when he was about to get off work, he found Jiang Yuan together and expressed his doubts: "The population flow in the capital is very large. If the murderer kills someone, if he chooses to escape If so, will the green plants he planted be resold or discarded? If this is the case, our idea of ​​finding the murderer through plant species may become rootless."

He didn't say that he would be polite.

Jiang Yuan is already packing up his things and getting ready to leave work. His work of finding pollen has basically come to an end, and the focus of his work now is to find the corresponding flora.

Jiang Yuan had obviously thought about Tao Lu's question. He sorted out his words and said, "Although we can't guarantee 100% of it, we have found so many types of pollen, and the required area is also very large, no matter whether the place is rented or rented. Let’s face it, the murderer’s financial strength should be good. Of course, the murderer may just live or work here, so he won’t dispose of these plants.”

"This is actually..." Tao Lu was a little relieved, but his doubts were not completely dispelled. As Jiang Yuan said, this is not a 100% guarantee.

Liu Sheng said from the side: "Is two kilometers too short?"

Both Tao Lu and Jiang Yuan looked at him.

Liu Sheng didn't care about the price of firewood and rice, so he said, "The clothes donation box is in the commercial street. I don't know if the radiation range is within two kilometers of the surrounding area. We only delineated a two-kilometer range. Will it be missed?"

Tao Lu looked at this man who was not a man, and hated iron and steel, and said: "I haven't checked the 2 kilometers for a week..."

"Let's make an alternative." Jiang Yuan also felt that 2 kilometers was not enough, but the environment in the capital is like this, adding another kilometer will more than double the workload - the area of ​​a circle with a radius of 3 kilometers is 28 square kilometers, which is more than 12 square kilometers. The currently designated [-] square kilometers is too large. Even the criminal police detachment of Peking Opera feels that the burden is too great.

Tao Lu breathed a sigh of relief at first, and then felt nervous again.

He feels a bit like he is doing Cao Cao now, and he is still in a state of being unsuccessful. He is anxious and afraid in his heart, wanting to go deep alone, but also afraid of being cut off.

Liu Sheng seemed to be watching the live broadcast, and he said without fear of excitement: "There is a subway in front of the commercial street. The murderer lost his bloody clothes. Could it be that he wants to take the subway?"

Tao Lu almost spit out a mouthful of blood. Now he really wanted to solve the person who asked the question, so he gave Liu Sheng a hard look and said, "Wherever he goes, as long as the crime scene is nearby. The most important thing now is to find the criminal." on site."

He said and looked at Jiang Yuan.

Jiang Yuan looked at the two of them, they were both old Muggles who didn't understand forensic botany, and they were quite worried.

Jiang Yuan then said: "I think there is no problem with the way of investigation. We will continue to investigate for a while and make a decision after the first wave of search within two kilometers is over."

There is a problem with forensic botany, that is, most of the criminal police cannot understand it. As a result, everyone's anxiety becomes very serious.

At the same time, the use of forensic botany technology is inherently time-consuming, which is also a part of increasing anxiety.

Tao Lu could only nod his head, then gave a forced smile, and said, "It's time for dinner, let's have something together."

"No need, I brought food at home." Jiang Yuan paused, and said, "I'm too lazy to go out today, and I'm going to rest early tonight."

Tao Lu said politely: "I'll show you the specialties of the capital, and you can eat the things you bring at home later."

Jiang Yuan shook his head and said: "My dad did a good job and sent someone to send it over by plane. If you don't eat it at night, it will be a waste."

Tao Lu was taken aback: "Our dad is so nice?"

"He has been killing cattle and sheep at every turn recently, and he also wants me to taste it." Jiang Yuan said a few more words and went back by himself.

Most of the Beijing specialties are not must-try.

The next day.

Jiang Yuan came to the bureau early to help check the video data captured by the drone.

The Jiang Yuan case special class he brought himself has a lot of people. Counting the follow-up support, it has already accumulated almost 30 people.The Zhengguang Sub-bureau with a number of thousands of people seems inconspicuous, but such a group of people are all experienced homicide detectives, which is quite valuable.

Even if it is the Zhengguang branch, it is not easy to temporarily dispatch such a vital force.

As for Wang Chuanxing and others, when they first followed Jiang Yuan, they were indeed newcomers.But up to now, most of the members of the entire backlog special class who don't have seven or eight lives in their hands can easily reach double digits.

The criminal police detachment of the Zhengguang branch is not so rich.

A group of people asked for a large conference room, and when the formation was set up, they got busy.

Wang Chuanxing and others are already familiar with the work of watching video images, and they are all used to cooperating with Jiang Yuan. Just wait for the feedback from Jiang Yuan.

Jiang Yuan does this level of image enhancement at a very fast speed.

To be honest, the image enhancement of LV5 is a waste when used on this level of video, but the effect is extremely outstanding.

Soon, a green plant planted on the balcony was marked by Jiang Yuan.

"Begonia, Chinese rose, Phalaenopsis...all match." Jiang Yuan took the printed photo, circled the flowers on it with a pen, and showed it to Tao Lu.

Tao Lu was overjoyed: "It matches? Is this the one?"

"Not sure, but most of the flowers are matched." Jiang Yuan said.

"Didn't you say that the pollen map is unique?" Tao Lu frowned slightly.When it comes to actions, one has to be very careful.

Jiang Yuan explained: "What I see now is only a corner of the balcony. I can't be sure where he is on the balcony or whether there are other plants in the room. I can't see it in the video. But I think the degree of similarity is so far The level is already worth a trip.”

"Then go." After Tao Lu heard this, he immediately made a decision, laughed twice, and said to Jiang Yuan: "My tone of voice just now was not good, this is my old problem, don't take it to heart..."

"No." Jiang Yuan smiled calmly. In some places, the captain of the criminal police would go into a rage after contacting Huang Qiangmin. The captain of the criminal police detachment with such good conditions in Taolu, a little temper is nothing.

Soon, a group of criminal policemen was assembled by Tao Lu.

Jiang Yuan also brought Mu Zhiyang and Wang Chuanxing with him, and the three of them joined Liu Sheng's brigade and went to the Huilong Building where the target was located.

　I feel in good spirits when I rest, but I feel sluggish when I start coding, I need to get used to it... In addition, thank you for voting for the monthly pass yesterday, the first time I came that day...

　
(End of this chapter)