Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

Chapter 675: Delineating the Scope of Criminal Suspects

This is the only possible clue obtained by the Beizhou City Criminal Investigation Detachment.

Lu Chuan has already seen it. This fingerprint is indeed blurry and it is very difficult to identify it.

But for Lu Chuan's advanced fingerprint identification and analysis skills, it just takes more time.

Lu Chuan did not process the fingerprint immediately.

Instead, all scattered items were re-inspected.

Judging from the range of items scattered at the scene, the murderer must have gone through the victim's backpack. .

Since you have rummaged through your backpack, you may have left fingerprints, skin flakes, and hair.

Lu Chuan wanted to conduct trace physical evidence analysis on these items.

See if you can find anything.

Fortunately, these backpacks are waterproof, and some of the items inside may still contain some clues.

Judging from their own life and study trajectories, nothing suspicious was found.

After more than half a year of exposure to wind and sun, many traces, even if they were left at that time, have long since disappeared.

Song Mingguang was making a report in the conference room.

"Her boyfriend is also one of the top academics in the school. They have found a job together. This time they go to the mountains to play. They plan to get married as soon as they get out."

The group of people led by Song Mingguang began to investigate the family situation and interpersonal relationships of the four people.

"Our daughter is very well-behaved and doesn't offend people very much. She is also very popular in school and has won scholarships for four consecutive years."

"Our son doesn't have any enemies. Although his performance in school was not that good, I have never heard of him having any conflicts with his classmates."

"My investigation results show that we can basically rule out the possibility that four people were killed due to various reasons such as grudges, financial disputes, family disputes, etc."

We also conducted an investigation into their parents’ work and life, and found no special circumstances.

"These students are quite good in our class. There are more than 30 people in our class. Everyone has a good relationship and there are usually no conflicts."

This work must be particularly tedious.

Song Mingguang's investigation did not achieve any breakthrough results, nor did it make any major progress.

Three days passed quickly.

The work of the entire serious crime team entered a full-throttle rhythm just an hour after arriving at the Beizhou City Criminal Investigation Detachment.

Not only were there many items left at the scene, but they also took a long time to pass.

Lu Chuan could only complete this work by himself.

"Uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu"

"So I prefer four people to explore in the mountains. It is very likely that there will be a conflict with other teams or people, leading to tragedy."

The family backgrounds and interpersonal relationships of the four murdered students were relatively simple.

"We all know about the expedition last time. We originally had a few classmates who wanted to go, but they were two couples and it was pointless for us to go. Let's just think about it."

Li Donglin has been under a lot of pressure in recent days.

The news that three skeletons were found in Beiliang Mountain cannot be suppressed at all.

The news had already spread.

Now all the teams exploring in the mountains have come out one by one.

Some questions about the safety and stability of the tourism environment in Beizhou City have even begun to circulate online.

The leaders of the provincial department called Li Donglin yesterday and asked them to solve the case as soon as possible.

"Wang Song, how is your investigation going?" For three days, Wang Song led a team to conduct a careful investigation of all the teams that entered the mountain at the same time as the victim's team.

"The investigation on my side is basically completed."

"We checked the records of expedition teams registered in and out of the mountain from the Beiliangshan Police Station."

"Those who registered were all teams led by guides. Judging from the crossing time, there were a total of 12 teams entering the mountain at that time."

"Three of the teams have been wandering at the foot of the mountain without going in depth. They are just doing live broadcasts and have relatively few people. Each team has two people hiring a guide."

"As for the other nine teams' routes into the mountain, we communicated and investigated with the guides."

"Judging from the current situation, their walking route does not intersect with the route of the victim's team."

"Judging from the investigation, the possibility that the same team is the murderer is basically ruled out."

During Wang Song's investigation, all members of all teams were verified.

It is not easy for one person to lie and be caught, but it is not very likely for several people to lie together without being caught.

Under normal circumstances, if team members collude in confessing in advance, the details and terms spoken by everyone may be relatively similar.

However, Wang Song did not find this situation during his investigation.

Although everyone in the team speaks differently, the details and environment are all flawless.

"In addition, we have consulted the guides who often go in and out of Beiliang Mountain."

"The so-called guides of Beiliang Mountain are actually some permanent residents at the foot of the mountain."

"These residents often go to the mountains to collect herbs, mushrooms and some mountain products, so they are relatively familiar with the environment in the mountains."

“But everyone’s route into the mountains is different, the scope of picking mountain products is also different, and the depth into the mountains is also different.”

"So this means that as long as most teams find different guides, the routes into the mountains will basically not be repeated."

"And the guide of the victim's team took them along an old hunting trail that existed decades ago."

"According to some local guides, the mountain trail that the victims took can lead them far into the mountains."

"And the location is very secretive. If you are not a local, you basically don't know the road."

Li Donglin keenly captured the key points of the clues mentioned by Wang Song.

"You mean...the case was committed by local people?"

Wang Song just said that all the expedition teams that entered the mountain at the same time as the victim's team have already conducted investigations.

It has been basically determined that these teams are not suspected of committing the crime.

Then Wang Song added that the road the victim took was relatively hidden and could not be known except by locals.

There are only two types of expedition teams that do not register at the Beiliangshan Police Station.

One is to go into the mountains privately without hiring a guide.

In this case, the hidden hunting trail that the victim took was nowhere to be found.

Another way to enter the mountain without registration is for local residents.

They don't need to register, and they know the old hunting trails.

So what Wang Song means is that the murderer is most likely a local.

Wang Song nodded heavily: "Although there is no substantial evidence to support it, based on the current situation, it is more likely that local people committed the crime."

"So my opinion is to focus on the investigation of local people near Beiliang Mountain."

(End of this chapter)