civil forensic

Chapter 1259 Strategy

Chapter 1259 Strategy

Wan Quan looked at Jiang Yuan and felt that he was incomprehensible.

As a policeman, Wan Quan only needs to think briefly to easily come to a conclusion. It would be difficult to solve the case based on just a pool of blood and some traces of gunfire.

But Jiang Yuan's confident look made Wan Quan lack confidence.

This is Jiang Yuan, the man whose name is engraved on the iron pot stew. He said "my suggestion", what else can Wan Quan say? "I think"?

"What do you need us to do?" Wan Quan asked in a different way.

"Let's narrow down the scope first. Sit down." Jiang Yuan asked a few people to sit down and began to ask: "Where do you think the crime scene is? Where was the car when the murder took place?"

"Well... I think they are either on the way or just got off the ship. If they haven't boarded the ship outside the country, there is no need to send the car over." Wan Quan said for a while, then stopped, looked at Jiang Yuan awkwardly, and said: "Of course, my reasoning may not be complete. If they killed someone outside the country and then sent the car over, it may also be a solution. In fact, if it is a stolen car, this possibility is even greater."

"Where do you get off the ship? Where do you board the ship from abroad?"

"As for this batch of cars, as far as we know, they should have been unloaded at Tianjin Port and shipped from Hong Kong." Wan Quan prepared a little and gave an accurate answer.

It is not difficult for customs to collect this kind of information. In fact, the smuggling routes are all clear, similar to the drug routes. Common car smuggling can be summarized as land infiltration at the border + smuggling at coastal ports + cross-border gray customs clearance. Land transportation is from Myanmar and Laos to Yunnan and Guangdong, and sea transportation is from Vietnam to Fangchenggang, or travels all the way from Hong Kong and Macao. There are also a small number of people entering the country through the ice from Russia.

Most smuggling gangs are fighting the police by following established old routes. If anyone invents a new route, they can immediately expand into a large smuggling gang.

For the police, the fact that the route is clear does not mean that they can accurately find the prohibited goods.

The key to the problem is that finding the goods does not necessarily mean finding the people, and finding the small followers does not necessarily mean finding the big followers. The more levels there are, the easier it is to lose the connection. The smuggling group can completely treat the minions as consumables, while staying safely abroad and organizing people to do things in waves.

It is also for this reason that whether it is a drug case or a smuggling case, people prefer to conduct in-depth investigations before catching the offenders in one fell swoop.

"I think we can do a simple screening first." Jiang Yuan is now becoming more and more adept at doing this kind of small investigation, also because the technology he has mastered is very suitable for this.

Wan Quan nodded quickly, and took a pen to write down: "You go ahead."

Jiang Yuan: "First, considering the location, we can collect records of bodies in Tianjin Port and Hong Kong and Macao to see if there are any bodies that died from gunshot wounds for comparison."

Jiang Yuan: "Secondly, if someone died in the smuggling group, there would always be some information. Or it might not be news of a confirmed death, but someone is missing or has disappeared and never reappeared. If we can gather the information, we can also make a list."

Wan Quan wrote it down, but he was very confused. He said, "I don't quite understand. Don't be upset. It's easy for smuggling gangs to deal with corpses. If they push them into the deep sea, they will be easily lost. We may return empty-handed if we look for the corpse. Besides, even if we find the corpse or the news of someone's disappearance, this case will be difficult to solve."

"You can discuss it freely." Jiang Yuan said first, and then said: "The two points I raised are actually to confirm the identity of the deceased. We are working on criminal cases. Once the identity of the deceased is confirmed, we have a focus."

"Grab the hand." Wan Quan seemed to understand.

Jiang Yuan smiled and nodded, and continued: "If the body cannot be found, it's fine, but if the person was killed near the coast or at the port, the body may be left behind. In fact, the most likely possibility is that the person was killed when getting on or off the ship, because he died in the smuggling car, right?"

"That's right." Wan Quan quickly agreed.

"Secondly, if we can't find the body, then looking for news of someone's disappearance is all about confirming the news and narrowing the scope. The members of the smuggling group are still human after all. I think if there is a list of missing persons and we try our best to confirm the identity of the missing person, then we have found a member of the smuggling group. I think it is very likely to be an important member."

Wan Quan was stunned when he heard the last sentence: "Why is he an important member?"

"If it's not important, it's not worth shooting at." Jiang Yuan said half-jokingly: "Anyway, let's find the person first and solve the murder case. As for the smuggling case, we can talk about it as the case progresses."

Wan Quan could only nod. He seemed to have understood that Jiang Yuan was only investigating the murder case and was not very interested in the smuggling case.

Despite this, Wan Quan still behaved himself because he had been investigating this case for a long time but had no results. He might as well see if Ning Tai Jiang Yuan was really as the legend said.

"The bloodstain itself is our most important evidence." Jiang Yuan adjusted his sitting position and said, "I suggest sending the bloodstain to the ministry for Y chromosome and family testing."

The Y chromosome is only present in males and is inherited from the paternal line. In other words, the Y chromosome of a father is the same as that of his son, his grandfather, and even his great-great-grandfather, as well as his brothers and cousins.

Therefore, the advantage of matching the Y chromosome is that the suspect's DNA does not need to be in the database. As long as the DNA of any male member of his family is matched, it can be matched. Although it is impossible to confirm which family member it is, it has greatly narrowed the scope. The famous Baiyin case was investigated from the 80s to the 10s. In the end, it was a cousin of the murderer who committed the crime. He was matched with the Y chromosome and then locked in.

Family testing refers to genetic genealogy technology, which is the second-generation sequencing technology and must be combined with big data, which makes it more difficult. However, it can find females and cousins ​​of the third or fourth degree. If it were in ancient times, the Orphan of Zhao would not be able to escape.

Wan Quan usually deals with smuggling cases, so naturally he doesn't need to do things like DNA testing. He has never dealt with laboratories related to ministries and commissions. He said a little embarrassedly: "Send it directly to the ministry? Well, our channels may be slower..."

Jiang Yuan waved his hand and said, "I'll make a call later. Y chromosome and family testing are still necessary. I heard that a lot of smuggling along the coast is family-based. If we match, it will be easy to screen again."

"This is a good idea." Wan Quan naturally agreed completely. As he listened to Jiang Yuan continue to make arrangements, he even had the illusion that solving the case would be easy.

(End of this chapter)