This place is far from the village, and the ravine is even more deserted. It is unlikely that the other party will leave the ravine on foot after abandoning the car.
Most likely driving or taking a ride away.
Since it was a ride, the vehicle would leave driving traces, and Lu Chuan hoped to find tire traces.
All work is proceeding in an orderly manner.
While Lu Chuan and others were investigating the scene, the traffic police began to conduct surveillance on the surrounding roads, centered on the ravine.
Yuan Shaokang did not rush over, but went to the High-tech Zone Criminal Police Brigade to investigate all major cases that Song Kun took over.
Of course, petty theft doesn't count, at least it's the level of sending people in.
6:30 p.m.
Lu Chuan returned to the ravine where the vehicle burned down. By this time, the vehicle frame had cooled down and all the debris had been collected.
"I guess we won't be able to conduct a live survey today."
The sky started to get dark, and the conditions for outdoor surveys were no longer met.
Even with lights on, there are still shadows.
According to the current survey regulations, the results of current surveys conducted under such conditions are not recognized.
After looking at the sky, Liu Guodong shook his head: "We'll come back tomorrow morning. Xiao Lu, what did you find there?"
Lu Chuan nodded: "I found something, more than a dozen sets of footprints and tire marks."
"The footprints are better and clearer, but the tire marks are worse. I collected four sets of tire marks on them, which need to be analyzed and identified."
Tire marks on asphalt roads are relatively easy to collect from the perspective of on-site survey.
But the road is not for criminals, and there are many vehicles passing through.
Lu Chuan collected four sets of tire marks, all left by different vehicles.
It is unknown which car the suspect was in, or whether he was in the car.
The work on site had to be suspended because it was getting dark.
But that doesn’t mean everyone can take a break.
A criminal police officer who was about to retire was deliberately killed by someone who faked the scene of a car accident, causing consequences that no one could imagine.
The police itself is a high-risk profession, and no one can guarantee that they will be able to work until retirement.
It's the Haizhou Criminal Investigation Detachment. Every year, there are one or two who get first-class merit by lying down.
This is a reality that every police officer must face.
Among all police officers, criminal police officers and anti-narcotics police officers have the highest probability of lying down.
This is why these police types occupy the top position in the contempt chain of the police industry.
Because, this is what they have worked hard for.
Song Kun was killed, and his nature was even worse.
There are still three months left before retirement, and Song Kun will be able to retire with success.
Three months!
Just three months!
If this case is not solved, the people in the Haizhou public security system will almost lose their hearts.
The entire criminal investigation detachment was brightly lit, and everyone could experience the atmosphere of tension to the bottom of their hearts and depression to their bones.
Not only the criminal investigation detachment, but the traffic police detachment was also busy.
With the ravine as the center, all vehicles within a radius of ten kilometers are being registered.
As long as there are vehicles that appear at that time point, they must be investigated.
This is a huge amount of work.
However, based on the time when the vehicle involved in the accident caught fire, if the murderer left by car before Li Kai and others arrived, this time difference would have been enough for him to leave Haizhou.
It is even possible to reach Tianzhou.
Therefore, ten kilometers sounds like a large range, but in fact it is only a small part of the theoretical investigation.
The reason why the traffic police detachment designated this area is because they only have so many manpower.
Existing exploration laboratory.
Lu Chuan is studying the footprints collected at the scene.
Lao Bai and Yang Sen have collected the footprints of all the police officers who have been to the scene today.
Now, Lu Chuan first needs to eliminate the footprints.
Although Liu Guodong, Yang Sen and Bai Wenhai have not done any research on footprint analysis, ordinary identification is still no problem.
"This is Li Kai's shoe print... this pattern... belongs to the short traffic policeman..."
It is not difficult to distinguish. There is a target footprint comparison. You only need to follow the pattern of the texture to make the most simple distinction.
In the end, Lu Chuan only had two sets of unfamiliar footprints left in his hands.
On the backlit board, photos of two sets of footprints hang.
"Are there two murderers?"
Liu Guodong crossed his arms and frowned tightly. The deep wrinkles on his forehead could trap mosquitoes: "Did someone take over or was it a coincidence? Someone left footprints in the ravine?"
Lao Bai shook his head: "There is a high possibility of a response."
Yang Sen also echoed: "The clarity of the two sets of footprints is similar. The ravine where the murderer abandoned his car is inaccessible. It is unlikely that someone will go in by chance."
"Also, it rained just four days ago, but there are no traces of water in these two sets of footprints."
The footprints left on the soil generally will not disappear quickly in the rain, unless it is a heavy rainstorm.
But after being washed by rain, the footprints will become round and smooth.
This difference, how to describe it, is that one is a girl who has not left the court, and is indifferent.
The other is a plump young woman, who is plump and round everywhere you look.
"Let's analyze it first. It's most likely that the other party is two people."
Liu Guodong and others had already discussed this when they were doing footprint identification.
The murderer faked the scene of the car accident. After the hit-and-run, he drove the car into a ravine and burned it.
This was definitely not a spur-of-the-moment idea, but had been planned for a long time.
Since the murderer left the ravine with a low probability of walking and a high probability of taking a car, it means that there should be someone else to meet him.
Of course, the murderer parked the car beside the ravine alone, then drove a stolen car and hit Song Kun to death, then returned to the ravine, abandoned the car and set it on fire.
It is not impossible to leave in the car that I prepared in advance.
Reasoning is what all criminal police officers like to do.
What Liu Guodong and others can think of, there is no reason why Ren Qiang and others who are investigating on the front line can't think of it.
Moreover, their analysis is definitely more profound than that of Liu Guodong and the other four, and there are more possibilities for reasoning.
For example, the murderer was neither a single person nor a two-person crime.
Is it possible for three people?
Of course there is.
Who stipulated that when Song Kun was hit and killed, there was only one person in the vehicle?
And if the crime was committed, there really wasn't just one person.
Behind Song Kun's death, it was really not that simple.
It is possible for a person to kill Song Kun because of hatred.
What about two people?
Even three people have a grudge against Song Kun?
Or is it that the people Song Kun arrested over the years gathered together to discuss revenge on him?
Some things are terrifying to think about.
However, these things are what frontline investigators such as Ren Qiang and Yuan Shaokang are worrying about.
What Lu Chuan needs to do now is to conduct identification and analysis on the two sets of shoe prints.
And it must be completed in the shortest time. There will be more difficult tasks waiting for him tomorrow.
In the laboratory, Liu Guodong and others are now helping Lu Chuan.
Of course, to be honest, the three of them didn't know how to do anything. They just watched Lu Chuan doing analysis with an enamel jar.
Measure the length of the footprint, the width of different points, the data between the lines, and the width of the edge.
Then there are a bunch of formula calculations.
Bang bang bang bang!
Lu Chuan's fingers clicking on the calculator were very rhythmic and the sound was dense.
Then the conclusions appeared on the piece of paper.
9:28 p.m.
Lu Chuan took a deep breath of Huazi: "Finally done."
