wavenovel Chapter 1167 Makes sense
Chapter 1167 Makes sense
Chapter 1167 Makes sense
Among various investigation directions, since Jiang Yuan chose to track the driver himself, investigating his escape direction and identity is the top priority.
Jiang Yuan and Liu Jinghui looked at each other, coughed lightly, and said, "First of all, we judge that the murderer is likely to flee the country."
Liu Jinghui added: "The murderer knew exactly where he was going and was well prepared. But he did not surrender and decided to flee. Basically, he had no choice but to flee the country."
"And it had to be fast." Jiang Yuan added, and then continued: "We investigated some checkpoints and surveillance after the incident. We can see that the murderer rode his motorcycle into the national highway and quickly left the surveillance area. The route he chose was very targeted and should have been prepared in advance. But if we discuss the route to go abroad, there are only a few routes to escape across the border. The direction the murderer rode away is consistent with the northeast direction. This is one of them."
The director nodded. It was just a direction. Although it needed to be considered, it could be discussed later. Besides, he himself was not prepared to discuss specific criminal investigation issues.
Jiang Yuan continued: "Secondly, observe the murderer's clothing..."
Jiang Yuan took out a photo, which was a photo of the murderer riding a mountain motorcycle on a national highway.
Several criminal police officers standing behind the director and others immediately stepped forward to look at the photos out of curiosity.
There were too many photos provided on site and time was too tight, so most people didn’t finish looking at them, or looked at them too quickly and their brains didn’t have time to process them.
The chief was also a former policeman. He looked carefully at the photo Jiang Yuan took out, from top to bottom, for a long time, and then his eyes lit up and asked, "Is it because of the boots? These are boots that you only need to wear in winter, right?"
Liu Jinghui said quickly: "Director, you have good eyesight. The boots he is wearing are indeed not suitable for the current weather in Changyang City."
The director's face lit up, and he said modestly, "Maybe you're wearing too thick clothes considering that you're riding in the early morning?"
"It's too thick. This is the same model as on Taobao, with fleece inside. It's a particularly thick model, designed to withstand the severe weather below -30 degrees Celsius. The nighttime temperatures in Changyang City are only a few degrees below zero." Jiang Yuan took out another photo and said, "Then we can add the customers of these merchants selling the same boots to the investigation list."
The director nodded with satisfaction: "This can indeed be taken into consideration."
"In addition, you can see that he has a backpack hanging behind his motorcycle, and outside the backpack is an outdoor tent and sleeping bag. In this photo, you can see that the tent and sleeping bag are both special cold-proof versions. If you are going abroad on the same route, because the inspection in the northwest direction is more stringent, if you go abroad in the southwest or southeast direction, you don't need such tents and sleeping bags. It's too hot and too heavy. The weight that a motorcycle can carry is limited, so there is no need to prepare these."
The director reacted quickly and said, "So, he wore boots in advance to reduce the weight. Cold-proof boots are too heavy and take up too much space."
"Yes." Jiang Yuan nodded and said, "He needs to carry money and probably weapons with him. The motorcycle is already very heavy with outdoor equipment and clothes. If there are too many things, the off-road performance of the mountain motorcycle will be greatly reduced."
"Even if that's the case, if he really drives to the Northeast, his motorcycle will be useless. In the snowy wilderness of the Northeast, a sled is more practical." A criminal police officer behind him couldn't help but step forward to speak when he heard this. This is a matter that determines the direction of the criminal investigation, and no one will take it lightly.
Liu Jinghui took over the conversation and said, "There are two possibilities. One is that the murderer himself did not know the situation in the Northeast, and he just prepared these things as a matter of course. The other possibility is that the murderer was going to change cars again after entering the Northeast. This idea is also very realistic. If he rode a mountain bike to enter the Northeast, it would take at least two or three days, and four or five days is possible. By that time, the intensity of the local search should have been very low. If he had other ID cards, he could even take public transportation."
"That makes sense." The director now caught up with Liu Jinghui's rhythm and couldn't help but nodded.
Jiang Yuan continued: "The third point..."
"There is a third point?" The director was surprised and a little amused.
"The third point is based on the footprints, mainly for reference." Jiang Yuan said this, and then as usual, he showed a few photos of footprints that everyone thought were similar, and said: "Through the footprint identification, I think the murderer's race is most likely from Northeast Asia. In China, this race is mainly Northeast Han genes, Jiaodong Peninsula Han, and a small number of inland North China and Northwest Han."
Jiang Yuan: "In short, we can assume that the murderer's ancestral home is most likely in Northeast China or Shandong, with a smaller probability in North China or Northwest China. Therefore, it is possible that he is familiar with the environment of Northeast China, or even a native of Northeast China. If the goal is to leave the country, whether the murderer's footprints are in Northeast China, Shandong, Northwest China or North China, leaving Russia from Northeast China is a safer route."
Although he had heard many reports before, the director was still deeply shocked this time: "It's really rare to hear people use such English and academic vocabulary during case analysis meetings."
"I'm a forensic doctor." Jiang Yuan smiled.
The director also laughed: "You call this a reference?"
"After all, the murderer's hometown cannot directly determine the murderer's escape direction. The most important thing at this stage is to mobilize all forces and retrieve surveillance according to the murderer's direction of movement." Jiang Yuan did not talk much about technology. He was at level 5 footprint analysis. Even though so many strong criminal investigation teams were dispatched to the scene, there was not even a footprint expert of this level.
Moreover, even the few footprint experts who can reach LV5 in the country are not necessarily good at analyzing races through footprints, and Jiang Yuan's LV5 is comprehensive. Therefore, from this unconventional perspective, he can just give the answer directly, and there is no room for discussion.
The director did not just give a few words of encouragement and move forward as he did before. Instead, he thought for a moment and decided, "Then the investigation to the northeast will be left to you, Jiang Yuan. I remember that you are good at image detection?"
"In terms of image detection, I am better at trajectory analysis and image enhancement. I also understand some technical defense and surveillance technologies." Jiang Yuan frankly stated his expertise. His image detection-trajectory analysis is at level 6, but it is limited to trajectory analysis and is not as comprehensive as footprint analysis.
Jiang Yuan guessed that the chief probably wanted to cooperate with other criminal police teams to do some technical support work.
He had no objection to this. In fact, he would solve problems from some experts from other places on a daily basis, especially those from local police stations with whom he had "exchanged" with. They would pass on questions they were unsure about, and he would basically give answers if it was easy to answer.
Criminal investigation techniques are actually the same as ordinary techniques. They are easy for those who know how to do them, but difficult for those who don't. For a math problem, someone who knows a little bit may need several hours or even days to do it. For someone who doesn't know much, it may take several weeks or even months to look up information or even learn from scratch. But for someone who has completed the preliminary learning, it may only take a few minutes. A problem that takes several hours or even longer is already extremely difficult.
Jiang Yuan's words were understated, but to the other police officers, they sounded somewhat intimidating.
If it were a young person who said so casually that he was good at bala bala and knew a little bit of wah-wah, he would probably be ridiculed secretly or laughed at openly. But how did Jiang Yuan solve the case? Various stories have already spread.
He had just used a lot of image detection techniques in the two cases he handled in Lanyue City. And because Lanyue had a film and television studio and these were a series of major cases, the two cases had attracted a lot of attention from both the industry and the public, and everyone present knew about them.
As for Jiang Yuan's ability in footprint identification, there is no need to explain it. There have been too many cases to have proven it, and at least 30% of the police force present have used it.
This made Jiang Yuan's answer not seem to be self-boasting at all, but was purely self-boasting.
"Okay, okay." The director said in an appreciative tone, "As for the image detection, you should also participate more, especially when the image detection team encounters difficulties, you can actively help them solve the problem. No matter which team finally catches the murderer, you will be credited with the achievement."
He made the promise clearly.
Jiang Yuan stood at attention and responded "yes", showing his full emotional intelligence and being well-behaved.
The director suddenly turned around and asked, "Old Ge, what do you say?"