The Luojin City Criminal Police Detachment does not have its own vehicle inspection department. Similar to Changyang City, they also put the suspect’s abandoned car into the Traffic Police Detachment’s Vehicle Inspection Center.
Everyone then took a car to the place. Jiang Yuan sat in the back seat and scanned all the fingerprints, footprints, DNA and other physical evidence involved in the case. He also looked at the information provided by technical investigators and other parties.
LV5's fingerprint and footprint identification was very fast when looking at these photos. Jiang Yuan didn't have to deal with it, he could just go through it after a little checking.
For Jiang Yuan, who is used to backlog 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 identify the criminal and other information through several directions.
However, in the current situation, the identity of the criminals is already known, so it is not important. What is important 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 others are probably still confused at this time. There are too few people in China who have mastered this technology, and normal people probably have not considered it.
In a large indoor parking space, there is the JAC pickup truck that we are going to see this time.
The car itself is a bit shabby, embodying the image of a poor family still working hard.
Looking at the battle-damaged interior of the car and the mess in the rear trunk, Jiang Yuan understood that it was not stolen, but was one of the reasons for calling the police.
"Have you already taken fingerprints and DNA, right?" Jiang Yuan asked, a few meters away from the car.
"Absolutely. Anyway, someone has already swiped it with a brush and taken a lot of photos." In the administrator's understanding, a car that has had fingerprints and DNA taken is considered to have been fully inspected.
In fact, that's right. When a normal and complete vehicle passes through this period, it is basically considered to have been inspected.
When Jiang Yuan heard this, his slightly worried mood disappeared.
What he was most afraid of was that he had already collected trace evidence, so he would have to look at the results compiled by others. For him, a VL3 novice in forensic botany, it would be somewhat troublesome.
However, when it comes to just taking fingerprints and DNA, a normal person would not wipe the car all over, but would only use an inspection light or the like to run it over and see fingerprints, footprints, etc., and then go forward to collect evidence.
For the collection of trace evidence or forensic botany, this level of preparation is nothing.
"Bring us our tools."
Jiang Yuan asked for a brush and began to brush away 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, some of them unable to keep up with Jiang Yuan's rhythm.
While chatting with the leaders of the Luojin City Criminal Police Detachment, Huang Qiangmin asked Jiang Yuan: "Are we looking for trace evidence? Don't you usually do it very late?"
In his impression, Jiang Yuan usually tried to find trace physical evidence when he could not find other evidence.
As the name suggests, trace evidence is small in quantity, and the amount of information it can provide is definitely not as much as normal evidence. In addition, trace evidence is 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 sporopollen, so he said: "Luojin City has probably searched for all the evidence that can be found. I just want to find another way and try another plan. It should be OK."
?”
Jiang Yuan used a little bit of emotional intelligence and asked Political Commissar Ge from the Luojin City Criminal Police Detachment next to him with a smile.
He is usually too lazy to use this thing. He doesn't expect a promotion or salary increase. Huang Qiangmin is still there to protect him. If he uses his emotional intelligence day by day, it will be a real waste.
This time is a little different. We have changed provinces, but it is still different from Shannan Province. Cui Xiaohu looks young. In this case, he has to use a little bit of emotional intelligence.
Of course, Huang Qiangmin has taken all these into consideration, and emotional intelligence is also charged, so there is no waste.
Political Commissar Ge didn't know that every gift in destiny has a price, and some are particularly expensive.
He also smiled slightly because Jiang Yuan said he wanted to find another way.
It would indeed be a bit embarrassing if evidence was found among the things I had searched for. Even if Comrade Jiang Yuan, a famous expert hired by the ministry, found evidence, it would still be embarrassing.
However, it would feel much better if Jiang Yuan found another way to solve the case. It's not that we didn't do well enough, it's that we took the wrong path and we were unlucky.
Political Commissar Ge chuckled: "As expected of Jiang Yuanjiang, the strategy at the beginning was different. Well, that's the best. We all work together to find ways to solve the case..."
Huang Qiangmin smiled and said nothing. Jiang Yuan had never shown this before.
Political Commissar Ge talked about the case and continued: "The kidnappers this time are extremely arrogant. We suspect that they must have made sufficient preparations for a long time in advance. Otherwise, they would not be able to avoid such an intensive search.
The three people even deliberately wanted to cause trouble and kidnapped the child on the spot in front of other parents..."
"Do they want you to pay the ransom quickly?" Huang Qiangmin is very clear about the social impact of the case.
If it is a secret kidnapping case, then the police will have enough time to fight with the kidnappers, and they will not choose to pay the ransom easily.
However, if it is a kidnapping case that has a large impact but is not particularly serious, in order to quickly eliminate the impact and solve the case, especially to rescue the hostages, the superiors may pressure the police to pay the ransom quickly.
The balance here requires at least a LV1 kidnapper theory.
Political Commissar Ge knew exactly what Huang Qiangmin meant. He nodded solemnly and said, "It is indeed very possible. We speculate that they wanted to get money and went abroad directly. At the beginning, they even wanted Bitcoin.
We said the currency was illegal, and we kept saying it but didn't pay it out..."
"Two million in cash is quite a big bag. Can they take it out?"
The three of them are all known, so it is naturally impossible to deposit cash into the card. In fact, in today's banks, if you want to deposit an additional 500,000, you have to ask the color of the dog that Gaozu saw when he was 18 years old.
Not to mention that the serial number of the money must be recorded.
Political Commissar Ge's face darkened, and he continued: "In this regard, we have several guesses. One is that they can hide the money and find someone to get it out later. The other is that they may have a planned route, such as starting from
Smuggled out by sea."
The most famous thing in Baijiang Province is Baijiang. You can go out to sea by taking a small boat, and then change to other fishing boats at sea. Going abroad is not as difficult as you think. This process mainly requires money, and a small boat with a certain speed can
The money you give to fishing boats must be at least hundreds of thousands before anyone is willing to take the risk with you.
Normal stowaways cannot afford such a large amount of money.
"Where is the victim? Can it be determined whether he is alive or dead?" Huang Qiangmin asked again.
"It worked yesterday, but I haven't made the call today yet." Political Commissar Ge paused and said, "We verify the child's physical condition every time, but the danger is still there."
…
Jiang Yuan did not participate in the conversation between the two, and concentrated on studying the car.
The car's body was covered in pollen and sporopollen.
In the natural environment, the pollen of wind-pollinated plants can fly hundreds of meters away. Think about the season when catkins and poplars are in full bloom. It is just because the willows and poplars are too upright that they attract complaints from people.
At different time periods, pines, cypresses, mulberries and vines are the main force in spreading pollen. It is normal for pollen to float hundreds of meters away.
Most importantly as a testament to location, the types and proportions of pollen and palynomorphs are different in each area.
To put it simply, the pollen pattern obtained by the murderer standing in front of a garden door is completely different from that obtained by standing one meter away.
Of course, to make a pollen map of this level, LV3's forensic botany is needed.
"Do you have a centrifuge?" Jiang Yuan first scrubbed and then washed, then sorted the washed sludge and put it aside for subsequent use of the centrifuge.
"There is it in the trace evidence laboratory." Political Commissar Ge said.
"Then please trouble them to process it." Jiang Yuan directly outsourced the primary tasks.
Luojin City is the capital of Baijiang Province and has good economic conditions. 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
Some mud or something should not be a problem.
Jiang Yuan also asked for various strong acids to be used to process samples taken from other places.
Strong acid is used to nitrate the background in samples, such as sand, clay, fiber, lignin, humic acid, etc.
It may sound a bit incredible, but in fact, when all the above things are corroded by strong acid, spores and pollen will still be there.
Sporangia, pollen grains, insect, fungal residues and crustacean shells all have a layer of special polymers that can resist strong acids that cannot be resisted by quartz, clay and other materials. This polymer is called sporopollen in plants.
The pigment is called chitin in insects and fungi.
After this step, and even this step, it is best to do it in the laboratory.
This is not only because the use of strong acids is dangerous, but also because the laboratory needs to be cleaned in the end to protect it from contamination.
There are also spores and pollen floating in the air in urban spaces.
For the next day, Jiang Yuan spent almost all of his time in the laboratory and in front of the microscope.
The white-shirted men of the Luojin City Criminal Police Detachment had high expectations for Jiang Yuan, but they also didn't understand.
Cui Xiaohu actually didn't understand either, but he had to give peace of mind to the criminal police in Luojin City, and explain to the leaders of the ministries and commissions who were paying attention to the case...
After a lap, Cui Xiaohu felt that he was more tired than the kidnapper.
Huang Qiangmin patted Cui Xiaohu on the shoulder with understanding. It was not easy.
