Chapter 567 QZ City 116 Case
Li Donglin looked at Lu Chuan’s expression with great anticipation.
Judging from the past experience of the crime team in solving crimes, Lu Chuan can always give very valuable clues in major and important cases.
On-site investigation has always been the most important and fundamental link in solving crimes.
It’s just that given that everyone has different abilities, the situation at the scene is different, the number of traces left by the murderer at the scene, and various other objective factors will lead to different findings every time during the investigation. There is a difference.
In some crime scene investigations, a fingerprint may be used to identify the murderer.
However, there are also cases where the murderer seems to have left no traces at the scene of the crime, and the on-the-spot investigation seems to be meaningless.
A powerful detective on the scene is someone like Lu Chuan. He can discover things that others have not discovered, and he can find details that others cannot find.
This morning, Lu Chuan stayed at the scene the longest.
It is equivalent to surveying the scene again.
Although half a month had passed, many things could not accurately tell Lu Chuan what happened at the crime scene.
However, the discovery of some details still allowed Lu Chuan to find some valuable clues.
"There are three murderers."
Lu Chuan's judgment is consistent with that of the Tianzhou City Criminal Investigation Detachment. The traces of three unfamiliar footprints at the scene are very obvious.
"Suspect No. 1, the murderer who cut the throat of the male victim, is male, 1.73 to 1.76 meters tall, weighs about 70 kilograms, has an old fracture in his right leg, and was not injured at the time Got good treatment ”
The footprints of suspect No. 1 are very distinctive.
The footprint of the right foot is lighter than that of the left foot, and the angle is slightly outward.
This situation is not born. Generally speaking, it should be that the tibia has been fractured, but during the process of restoring the bone set, it was not treated well, so it left a certain degree of disability. .
"Suspect No. 2, a large number of footprints appeared in the kitchen, is the murderer who dismembered the child. He is male, about 1.7 meters tall, weighs 60 kilograms, and is left-handed."
"Why? Are you sure you are left-handed?”
Sitting opposite Lu Chuan, a middle-aged detective asked a question.
“Because of the angle of the stab wound.”
“There are three suspects in total. Judging from the distribution of footprints at the scene, they attacked three victims respectively.”
< br>Everyone agrees on this.
“Suspect No. 2 in the kitchen, when dismembering the body, always cut at an acute angle from the left side.”
"If the knife is held in the right hand, the wound should be cut diagonally from the right side."
"In addition, the second suspect...should be the suspect in the 116 murders in Qinzhou three years ago."
Qinzhou...116 Extraordinary Murder Case?
Everyone sitting here has heard of this case.
Three years ago, a shocking and major case occurred in QZ City.
Three years ago, on November 6, a murder occurred at QZ City Vocational and Technical College.
In a dormitory where 6 female students lived, 5 people were killed overnight, and only one survived unexpectedly.
This case back then was registered with the provincial department for supervision.
Now, Lu Chuan actually said that the second suspect was the criminal suspect back then?
Li Donglin also looked at Lu Chuan with a solemn expression.
He had been to that case back then, but it was not solved and it remains an unsolved case until now.
Why did Lu Chuan judge that suspect No. 2 was the suspect in the Qinzhou case?
"Lu Chuan, are you sure?"
Lu Chuan nodded solemnly: "Li Chu, you should be sure." Lu Chuan turned on the projector and contacted his mobile phone using Bluetooth.
"I have seen the files of the Qinzhou 116 case at the fingerprint identification analysis competition organized by the provincial department."
In fact, this case should not have been placed in the fingerprint analysis case library at that time.
Because the murderer did not leave any fingerprints at the crime scene.
Without fingerprints, you will naturally not enter the fingerprint database.
The reason for putting it in is because there are some major unsolved cases in the province. Every time there is a fingerprint battle, experts are invited to study it.
It doesn't mean to reopen the case investigation, but just to see if anyone can find anything.
Even if the probability is one in ten thousand, it is still good.
Lu Chuan had read the file of this case at that time and studied it carefully.
"The murderer did not leave any fingerprints at the scene, but look here."
On the photo, there is a dark, brown mark.
"This is a mark I found on the kitchen cabinet door at the crime scene this morning."
The mark is about the size of a thumb, has no lines, and is just a blur.
At first, Lu Chuan thought this kind of trace was caused by the murderer wearing gloves and erasing the blood stains at will.
However, Lu Chuan, who had read the 116 case files, knew that it was not the case.
“This trace looked familiar to me at the time, but I wasn’t particularly sure yet. Just before the meeting, I checked the files of the 116 case.”
If Lu Chuan was just an investigating detective of the Haizhou City Criminal Investigation Detachment, he would definitely not have the authority to query the electronic files of QZ City 116 case.
However, he is also a member of the provincial serious crime team, which gives him access to the electronic files of cases across the province.
“Everyone is watching!”
At this time, there is another photo on the projection.
It was also a blurry mark as big as a thumb, which was the same size as the mark Lu Chuan found on the kitchen cabinet door during the murder case.
However, one color is dark red and the other is dark brown.
Lu Chuan dragged the mouse, and the two pictures gradually overlapped, and then...
Everyone magically discovered that the two blurred traces of different colors actually overlapped!
Yes, it’s like fingerprints, they overlap!
This is why Lu Chuan said that suspect No. 2 was the murderer of the Qinzhou 116 case!
Li Donglin looked at the overlapping marks in front of him and couldn't help but stand up. His eyes were surprised and he murmured to himself: "...is it him?"
Others were also surprised to see the overlapping marks on the projection. Two traces together.
Especially the on-the-spot investigation and trace inspection by the Tianzhou City Criminal Investigation Detachment.
"This..."
They actually discovered this trace during the on-site investigation, but they didn't take it seriously.
It was just regarded as a random trace left by the murderer. There was no clear fingerprint information on it, so it naturally had no useable value.
However, this trace now coincides with a trace from the Qinzhou 116 case three years ago...
What does this mean?
In fact, no one took this trace seriously in the 116 case back then.
According to the information recorded in the file, this trace of blood... belonged to one of the murdered students.
It was after the murderer committed atrocities and was contaminated with the blood of the student's private parts that it adhered to the wall.
But since there was no fingerprint information, it was just regarded as traces of an accident.
(End of this chapter)