civil forensic

The criminal police detachment of Luojin City does not have its own vehicle inspection department. Similar to Changyang City, they also put the cars abandoned by the suspects in the vehicle inspection center of the traffic police detachment.

The people then drove to the place.Sitting in the back seat, Jiang Yuan scanned all the fingerprints, footprints, DNA and other physical evidence involved in this case, and also looked at the information provided by the technical investigation and other aspects.

LV5's fingerprint and footprint identification, looking at these photos quickly.Jiang Yuan doesn't need to deal with it, he can turn over after a little checking.

For Jiang Yuan, who is used to backlogs of cases, this current kidnapping case provides too many clues.

If he is given enough time and sufficient investigation resources, Jiang Yuan may be able to determine the criminal and other information through several directions.

However, in the current situation, the identities of the criminals are already known, so it doesn't matter. What matters is where they are hiding now and where they will go.

Showing the relationship between people and places is the scope of forensic botany, and it is also one of the reasons why Jiang Yuan chose this case.

Huang Qiangmin and the others are probably still confused at this time. There are too few people in China who have mastered this technology, and normal people probably don't think about it.

Traffic Police Detachment Vehicle Inspection Center.

In a large indoor parking space, there is the JAC pickup waiting to be seen this time.

The car itself is a bit dilapidated, which epitomizes the image of a poor family who is still working hard.

Looking at the war-damaged interior of the car and the mess in the rear of the car, Jiang Yuan somewhat understood that it was not stolen, but one of the reasons for being called to the police.

"Have you already taken your fingerprints and DNA?" Jiang asked a few meters away from the car.

"Basically, someone has already brushed it anyway. A lot of photos have been taken." In the understanding of the administrator, a car that has had its fingerprints and DNA taken is considered to have been fully inspected.

In fact, it is true that the normal and complete vehicles have passed through this round, and the inspection is basically completed.

When Jiang Yuan heard this, his slightly worried mood disappeared.

He is most afraid that he has already taken trace evidence, so he can only look at the results sorted out by others. For a VL3 novice in forensic botany, it is somewhat troublesome.

However, if it is just to take fingerprints and DNA, normal people will not wipe it all over the car, but will only use inspection lights and the like to scan it once, and then go forward to collect evidence when they see fingerprints and footprints.

For the collection of trace physical evidence or forensic botany, this level of preposition is nothing.

"Bring us our tools."

Jiang Yuan asked for a brush, and began to brush the particles from all over the car.

From chassis and tires, to floor mats, bumpers, air filters, radiators...

Huang Qiangmin, Mu Zhiyang and others stood in front of them, some of them didn't keep up with Jiang Yuan's rhythm.

Huang Qiangmin chatted with the leaders of the criminal police detachment of Luojin City, and asked Jiang Yuan: "Are we looking for trace evidence? Don't you usually do it later?"

In his impression, Jiang Yuan usually tried to find trace evidence when no other evidence could be found.

Trace physical evidence, as its name suggests, is small in amount, and the amount of information it can provide is definitely not as much as normal evidence.In addition, trace physical evidence is still very expensive, so it is said that it will be considered at a later stage.

But this time, what Jiang Yuan wanted to find was pollen and spore pollen, so he said: "Luojin City should have searched for all the evidence that can be found, so I want to find another way and try another plan, it should be ok ?”

Jiang Yuan used his emotional intelligence a little bit, and asked with a smile to Commissar Ge of the Criminal Police Detachment of Luojin City next to him.

He is usually too lazy to use this thing.He doesn't expect to get promoted and raise his salary, Huang Qiangmin is in front of him to protect him, and he uses his emotions every day, which is a waste of money.

This time it's a little different. I changed the province, but it's still not the same as in Shannan Province.Cui Xiaohu looked young, so in this case, he had to use a little bit of emotional intelligence.

Of course, Huang Qiangmin has taken all these into consideration, and the emotional intelligence is also charged, so there is no waste.

Political Commissar Ge didn't know that every gift in Destiny was marked with a price, and some were especially expensive.

He also showed a slight smile because Jiang Yuan said to find another way.

It would be a bit embarrassing if someone found evidence among the things I had found here.Even if Comrade Jiang Yuan, a famous expert recruited by the ministry, found evidence, it would be the same shame.

However, if Jiang Yuan finds another way to solve the case, it will feel much better. It's not that we didn't do well enough, it's that we went the wrong way, and we were unlucky.

Political Commissar Ge giggled: "As expected of being an expert Jiang Yuanjiang, the strategy at the beginning was different. Well, this is the best way. Everyone works together to find a way to solve the case..."

Huang Qiangmin smiled without saying a word.Jiang Yuan has never shown it before.

When political commissar Ge talked about the case, he continued: "The kidnappers this time are extremely arrogant, we suspect that they should have made a long and sufficient preparation in advance, otherwise, they would not be able to avoid this intensity of search. The three of them even wanted to make a fuss on purpose, and kidnapped the child on the spot in front of other parents..."

"They want you to pay the ransom quickly?" Huang Qiangmin is very clear about the social impact of the case.

If it was a secret kidnapping case, the police would have plenty of time to negotiate with the kidnappers, and would not easily choose to pay the ransom.

However, if it is a kidnapping case that has a large impact and is not particularly large, in order to quickly eliminate the impact and solve the case, especially to rescue the hostages, the superior may pressure the police to pay the ransom quickly.

The balance here must at least have a LV1 kidnapper theory.

Political Commissar Ge knew exactly what Huang Qiangmin meant, nodded solemnly, and said, "It is indeed very possible. We speculate that they should go abroad directly to get the money. At the beginning, they even wanted Bitcoin. We said that the currency is illegal, and it was not paid out..."

"200 million in cash is a big bag, can they take it out?"

All three of them were clear cards, so it was naturally impossible to deposit cash into the cards.In fact, in the current bank, if you want to deposit an additional 50, you have to ask the color of the dog Gaozu saw when he was 18 years old, not to mention that the number of the money must be recorded.

Political Commissar Ge's face darkened, and he said again: "In this regard, we have a few guesses. One, they can hide the money and find someone to get it out later. Another, they probably have a planned route, such as from Smuggled out at sea."

Baijiang is the most famous in Baijiang Province. From Baijiang, you can go to sea by boat, and then change to other fishing boats at sea. Going abroad is not as difficult as imagined.This process mainly costs money. A small boat with a bit of speed costs hundreds of thousands of dollars, and the money for fishing boats must be at least hundreds of thousands of dollars, so that someone is willing to take risks with you.

Normal smugglers cannot afford such a large sum of money.

"Where is the victim, can you determine whether he is alive or dead?" Huang Qiangmin asked again.

"It was okay yesterday, but I haven't made a call today." Political Commissar Ge paused, and said, "We check the child's physical condition every time, but danger still exists."

……

Jiang Yuan did not participate in the conversation between the two, but concentrated on studying the car.

The car body was covered with pollen and sporopollen.

In the natural environment, the pollen of wind-pollinated plants can be scattered hundreds of meters away.Think about the season when catkins and poplars are flourishing, it's just because willows and poplars are too upright that they attract people's complaints.

In different time periods, pines, cypresses, sangworms, and Artemisia vines are the main force in spreading pollen.It is normal for pollen to drift out for hundreds of meters.

Most importantly, as a proof of location, the types and proportions of pollen and sporopollen are different in each region.

To put it simply, the pollen patterns obtained by the murderer standing in front of a garden gate and standing one meter away are completely different.

Of course, to make a pollen map of this level, LV3 forensic botany is needed.

"Do you have a centrifuge?" Jiang Yuan scrubbed and then washed, and sorted the washed sludge and put it aside for subsequent use of the centrifuge.

"It's in the trace evidence laboratory." Political Commissar Ge said.

"Then trouble them to process it." Jiang Yuan directly outsourced the primary task.

Luojin City is the capital of Baijiang Province, with good economic conditions, and the newly built trace evidence laboratory has three or four years of experience.Compared with ordinary physical and chemical laboratories, etc., the technical content of the trace evidence laboratory is much higher, and the screening of silt should not be a problem.

Jiang Yuan ordered all kinds of strong acids to process the samples taken from other places.

Strong acids are used to nitrify background in samples such as sand, clay, fibers, lignin, humic acids, etc.

It may sound unbelievable, but in fact, when the above things are corroded by strong acid, the sporopollen and pollen will still be there.

Cysts, pollen grains, insects, fungal residues, and the shells of crustaceans all have a layer of special polymers that are resistant to strong acids that quartz, clay, etc. cannot resist. This polymer is called sporopollen in plants. In insects and fungi, it is called chitin.

After this step, and even including this step, it is best to do it in the laboratory.

This is not only because the strong acids used are dangerous, but also because the laboratory needs to be cleaned in the end to protect it from contamination.

There are also sporopollen and pollen floating in the air in the urban space.

For the next day, Jiang Yuan spent almost all of it in the laboratory and in front of the microscope.

The white shirts of the criminal police detachment in Luojin City had expectations for Jiang Yuan, but they didn't understand.

Cui Xiaohu actually didn't understand either, but he still had to reassure the criminal police in Luojin City, and explain to the leaders of the ministries and commissions concerned about the case by the way...

After a lap, Cui Xiaohu felt that he was more tired than the kidnappers.

Huang Qiangmin patted Cui Xiaohu on the shoulder in understanding, it was not easy.

(End of this chapter)