Now that the results of the corpse examination have come out, the next step is to arrange and deploy the investigation and arrest work.

There were no fingerprints left on the deceased's neck, so comparing the remaining body fluids in the deceased's body is the only way at present.

"Team Li," Chen Yan looked at Li Hong: "The next step is to find people who match the DNA sequence of the body fluids in the deceased's body."

"Well, I'll arrange this!"

Chen Yan nodded: "The key point is that the construction workers on the construction site can be screened through blood collection and physical examination."

Of course Li Hong knew what Chen Yan meant.

Last night, only the workers lived at the construction site, and it was unlikely that students would go.

"In addition, let's go to the scene now and check the floor where the deceased fell.

In the morning, Chen Yan found that the deceased had signs of crawling, but because of the rain, the ground was slippery and muddy, and the deceased did not leave any traces of falling on the ground.

…

The scene is still under lockdown.

The newly renovated teaching building has a total of six floors and has now become a frame.

The inside of the building is relatively open and well ventilated.

On the second floor of the teaching building directly opposite the crime scene, Chen Yan and Li Hong found some traces.

Because it rained last night, the construction site was slippery and muddy, and there would definitely be mud stuck to the soles of the shoes.

At the scene, there were two rows of footprints, which were very clear.

Chen Yan was watching carefully, and Li Hong was also checking.

To be able to become the captain of Liancheng Detective Squadron 1, Li Hong is also an experienced detective.

"The footprints at the scene, one is a size 36 shoe, and the other is a size 37 shoe. They should both be women's shoes."

Men and women have different body structures, so even if they are the same shoe size, the structure of the shoes is different.

Therefore, the gender can be determined based on the shoe prints.

"According to the on-site inspection of the deceased in the morning, the shoe print No. 36 belongs to the deceased."

Chen Yan nodded. The mark was obvious and easy to judge.

Li Hong followed the two rows of footprints to the edge of the floor, which is directly above the crime scene: "Here, the toes of the deceased's footprints are facing inside the building, and his back should be facing outside."

"If you fall from this angle... you will land on your back."

Li Hong frowned deeply and his mind was racing: "Did someone push the deceased down from here?"

If this is the case, the case is a bit complicated.

Although according to the autopsy report, the fall injury was not fatal.

However, it will definitely have a great impact on the escape of the murderer the deceased faces next.

Chen Yan on the other hand shook his head.

Chen Yan pointed to two rows of footprints: "Captain Li, look at the distance between the No. 37 shoe print and the deceased's shoe print."

distance?

Chen Yan stood next to the footprints of the deceased: "Captain Li, you stand next to the other shoe prints."

Li Hong walked over and stood still.

"Captain Li, try to push me."

Um?

Li Hong was stunned for a moment, tentatively raised his arm, but lowered it halfway.

"The distance between the two footprints is about 1.2 meters," Chen Yan gestured to the distance between the footprints: "Even an adult male's arms can't reach each other, let alone a woman wearing size 37 women's shoes?"

"Could it be that the deceased fell down on his own?"

Chen Yan shook his head, he didn't know this.

However, there was one thing that made Chen Yan a little wary.

Although there is air leakage from everywhere upstairs, there is still a slight smell left.

This morning, Chen Yan opened the olfactory gene lock at the crime scene and discovered three rather special smells.

One of them is nitroglycerin.

There are two other types, one of which is the smell of the deceased, and the other statement also believes that it may be the smell of the female detective present.

However, it seems now that this is not necessarily the case.

On the second floor, Chen Yan found two smells, one was the smell of the deceased, and the other was completely different from the crime scene in the morning!

The residue of odor is limited to certain areas.

Even if the air moves quickly, the smell will still stick to nearby objects.

All in all, the smell on the second floor cannot be smelled downstairs, but it can be detected on site.

In other words, last night, the deceased met a woman on the second floor. After falling, was it possible that another woman appeared at the scene?

"That's not right. There are only three smells downstairs, nitroglycerin, the perfume of the deceased, and another scent..."

"But...why doesn't it smell like a man?"

You know, the deceased was violated before death.

Of course, it is unrealistic to decide a case solely based on smell.

Chen Yan can smell it because the olfactory gene lock is turned on, so other people cannot smell these smells.

Moreover, when Chen Yan passed by the scene downstairs just now, he found that all the smells were insignificant.

After a day, there are still some beams on the second floor and the building blocks it, so the smell will remain.

Wait until tomorrow, even if it is Chen Yan, you will not be able to smell anything.

Return to the first detective squadron station.

Chen Yan kept reviewing the clues he found during the day in his mind, trying to deduce all the clues together and restore the crime scene.

"Team Chen," while Chen Yan was thinking, Li Hong came in with a lunch box from outside: "Come on, have something to eat. We have to handle the case, so we have to eat."

"Thank you, Captain Li!" Chen Yan woke up from his thoughts after taking the lunch box handed over by Li Hong. He smelled the aroma of the rice and his stomach growled.

Passing a pair of chopsticks to Chen Yan, Li Hong smiled and said, "Brother Chen, I am a few years older than you. Please call me brother."

"Captain Li, it depends on what you said!" Chen Yanliang quickly took the chopsticks: "Brother, please don't be polite to me."

"Okay, we are detectives and have solved cases together, so we are comrades-in-arms."

Li Hong, who also opened the lunch box, looked at the complex lines and names on the case analysis panel.

Liu Jingting, Jia Xinyi, unknown male, unknown female, and even Qin Xiaoyu’s roommate.

"Brother Chen, you don't have to worry. Luan Ping and a few of your men have been out for almost a day. When they come back, they will have more clues, so it will be easier to handle."

Chen Yan nodded, of course he knew what Li Hong meant.

However, Chen Yan was worried that this case would not be easy to solve.

If you don’t believe others, Chen Yan still believes in the system.

Seven days detection period.

Is it at least more difficult than the case of dismembering the body and killing the wife?

boom!

While the two were chatting, the office door was suddenly opened.

It turns out that Li Hong's man who arranged the DNA investigation has returned.

"Captain! Captain Chen!" Liang Xu looked excited and pointed at the report in his hand: "The comparison results are out!"

Out?

So fast?

DNA sequence comparison requires blood testing.

The blood collection should have just ended at this moment, right?

The DNA sequencing hasn’t even been completed yet, so the results will be available so soon?

"Why so fast? Tell me what's going on!"

hey-hey.

Li Hong's subordinate, Liang Xu, chuckled, took a gulp of water, and breathed heavily: "In the afternoon, after the autopsy of the deceased was completed, I immediately compared the report results with the criminal's gene bank.

.”

Li Hong and Chen Yan nodded, this was considered a routine operation.

"As a result, when my subordinates called me just now, they actually compared me with each other!"

Li Hong snatched the comparison report from Liang Xu's hand and looked at the results carefully.

"Zhang Jun?"

"Yes, that's Zhang Jun." Liang Xu pointed to the photo on the file: "This guy is a habitual criminal. He was just released last year for theft."

"Where is this person now?"

"Just doing odd jobs at the construction site of the teaching building of Liancheng Art College!"
Chapter completed!