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

"This woman is Zhou Yang's mother, and the man... has been watching from behind."

In the picture, after Zhou Yang got the money and left, the men basically acted together, and then walked out not far behind Zhou Yang's mother.

Then bumped into Zhou Yang's father at the entrance of the supermarket.

Then, following the direction Zhou Yang left, he disappeared into the screen.

"Brother Hui, in this video, the soles of the shoes cannot be seen clearly."

The most important reason why Lu Chuan became suspicious of this person was that the edge wear of his leather shoes was similar to the wear degree of the shoe prints found at the scene.

Therefore, what Lu Chuan most wanted to see was the soles of this man's shoes.

Lu Chuan has conducted appraisal and analysis of the shoe prints at the scene of the crime, and he has a deep memory of the pattern of the shoe prints.

Therefore, as long as he saw the patterns on the soles of this man's shoes, Lu Chuan could be sure whether this man was present at the scene.

However, for Zhang Hui, there is no such trouble at all.

Zhang Hui, who has handled dozens of cases, has a very deep understanding of the behavior patterns of criminal suspects.

When zooming in on the video just now, Zhang Hui was able to confirm from the positions of several people that this man was following him at that time.

The moment Zhou Yang took the cash from his father and turned to leave, the man followed suit.

There is no doubt that this man's goal is the cash in Zhou Yang's hand.

After copying the video and telling him not to delete the original video material, Zhang Hui did not hesitate and called Ren Qiang directly.

Zhang Hui is the criminal policeman of the second operation team, so it is naturally impossible to call Qin Yong directly.

"sure?"

On the phone, Ren Qiang's voice was low, but he could hear a strong sense of expectation.

"It's almost inseparable. The other party should be running around and committing crimes on a temporary basis."

"I think it's time to organize manpower and investigate this person."

Although the surveillance cameras inside the Haizhou International Apartment were broken, the ones on the street were not.

There are many businesses around the street, and monitoring is also installed.

Now that the goal has been determined, the next step is much simpler.

Ren Qiang immediately organized manpower and rushed to the scene.

"This is the man, Lu Chuan found out. In the surveillance at the entrance of the supermarket, Lu Chuan felt that the wear of the other party's shoes was similar to the footprints found at the scene."

"We are on the opposite side," Zhang Hui pointed to the hotel where the surveillance was just investigated: "The surveillance at the gate saw this picture."

On the mobile phone, it was the scene of the man leaving Zhou Yang and setting off to follow.

Ren Qiang's case handling experience is much stronger than Zhang Hui's. In fact, when he saw the surveillance at the entrance of the supermarket at 08:30, he was basically sure that this person followed Zhou Yang.

At that time, after the other party was bumped into by Zhou Yang's father, he waved his hand and left without saying anything. Is this normal?
It was suspiciously seen from the monitoring that the other party's eyes had been looking past Zhou Yang's father, looking in the direction Zhou Yang left.

With the target, the next investigation will be easier.

"Zhang Hui, lead someone to call out all the surveillance cameras on this person along the way, and find this person's current trace."

"Yes!"

"Old Sun, go to Tuzhen and ask them to do face recognition."

"Yes!"

Everyone was as excited as an alarm clock that had just been wound up, and went to work jingling.

Being a police officer is actually like playing hide-and-seek as a child.

But in terms of difficulty, it is many times greater.

The greater the difficulty of the correspondence, the greater the sense of accomplishment after finding the other party.

In Lu Chuan's view, the happiest moment to arrest a criminal suspect is not the moment when he is arrested, but the moment when he finds important clues, is about to confirm the identity of the other party, and is about to be able to catch the person.

It's like the darkness before dawn, knowing that it is about to pass, but there are risks.

After Ren Qiang arranged the work, he immediately called Qin Yong to report the progress of the case.

"It's advancing... yes, we're trying to find each other in the shortest possible time!"

Lu Chuan was not idle either. As a surveyor, it was not his job to participate in specific actions.

From the hotel's monitoring, Lu Chuan determined the specific location of the other party next to the supermarket at 08:30.

And the other party didn't just stand there stupidly at that time.

Perhaps it was to avoid suspicion, or perhaps it was a coincidence that the other party was smoking less than three meters behind Zhou Yang's mother.

smoking...

It's impossible to smoke out the cigarette butts.

Moreover, the position where the other party was standing was on the wall connecting the supermarket and another clothing store.

This place is not in front of the store, and the sanitation is not so clean.

Sure enough, in the corner by the wall, Lu Chuan found more than one cigarette butt.

However, some of these cigarette butts are fresh, and it is hard to know how long they have been left.

But it doesn't matter, since there are cigarette butts left a long time ago, it means that no one has cleaned it.

Then the cigarette butt left by the other party three days ago should not be absent.

"Master, bring some evidence bags, I'm at Haizhou International Apartment."

Lu Chuan didn't act blindly, and the cigarette butts couldn't escape here.

40 minutes later, Liu Guodong arrived at the scene with Lao Bai and Yang Sen.

"Have you found anything?"

Lu Chuan nodded: "There is a suspicion, the target team leader Ren Qiang is investigating."

"When I watched the video, I found that the other party had smoked a cigarette in this place."

"Go back and do a DNA test, maybe you can lock the identity of the other party."

"Cigarette butts? Haha, well, DNA can be made in 30 days, let alone three days!"

Lao Yang was very happy.

As a current detective, there is nothing more surprising than finding a cigarette butt at the crime scene.

Because of the special structure of the cigarette butt, when a person smokes, a large amount of saliva remains in the sponge of the filter tip.

The spongy structure of cigarette butts is hollow, and the preservation of saliva components is very long-lasting.

In most cases, even if the cigarette butt is soaked in water or abandoned for a long time, DNA identification substances can be extracted inside it.

As long as it is not burned or scorched, cigarette butts are the most powerful tool for extracting DNA.

There were seven cigarette butts in total, and without Lu Chuan's hands, Lao Yang was so excited that he could handle it himself.

"Wait for my good news, the result will come out in one day!"

For DNA extraction of cigarette butts, any current investigation criminal policeman can do it.

Lao Yang has done it countless times.

Facts have proved that face comparison is really unreliable.

Tu Detective has been busy for a long time. Although the standard headshot of the other party has been extracted, if the other party is not at the airport or the like, the place where the face needs to be verified appears, and the face comparison depends on luck.

In the end, it is still the current reconnaissance who makes the meritorious service.

"Old Liu! You won the competition!"

Holding the report card, Yang Sen almost jumped up in excitement!

Seven cigarette butts, the DNA information of four people was identified.

And within the system, only two people have the original information.

One is Sun Miao, a native of Haizhou, a thief and a habitual offender.

But this person is not tall, only 1.6 meters three, and his age does not correspond to the footprint analysis results of Lu Chuan.

The other is Wang Huidong, a native of Beizhou, who was sent in because of robbery 12 years ago. (end of this chapter)