There were no signs of damage to the doors and windows, and no fingerprints, footprints, or biopsies were found in the room except for the deceased.

The deceased's name is Du Tan, male, 26 years old, unemployed. I attended a class reunion at noon the day before yesterday, and the class reunion ended at eight o'clock in the evening of the same day. Du Tan's death occurred between 9 and 11 p.m. the night before, after he returned home.

Du Tan's death was found because Du Tan's father called him the next day and did not answer, and sent his own driver to inquire, but no one opened the door when he knocked on the door, so he called the police.

The police immediately came to investigate the scene, and after a preliminary diagnosis by a forensic doctor, the cause of death was improper sitting posture after being drunk, and vomit entering the trachea caused suffocation. The criminal police did not find any traces of his murder at the scene, and based on the current clues, it was characterized as an accidental death.

However, Du Tan did not agree with the police's view of the accidental death, and strongly urged the police to re-investigate and arrest the murderer. After unsuccessful communication and negotiation with the police, the criminal police team conducted a second investigation of the scene today, but still found nothing.

Du Qin used his connections to contact the Provincial Public Security Department, and under the pressure of Du Tan's father, the Public Security Department handed over the case to the serious crime team.

After understanding the whole story, I feel more and more that this accidental death case is really a bit unexpected, not only because of the cause of death, but also because the deceased was found. Du Tan's father's driver decisively called the police just because no one opened the door because he knocked on the door.

"What about Du Tan's father?" I asked the police officer next to me.

"They knew each other before having tea with the director of the Public Security Department, and it is said that he has contracted the construction of many government dormitory buildings." Police Wang let out a long sigh of helplessness.

"Where is the body now?!" I asked again.

Police Officer Wang thought for a while: "Since the case has been handed over to your serious crime team, the body should be handed over to Ren Qiushi, the head of the forensic medical department." ”

"Did the driver who called the police investigate?" I asked.

"We have investigated, and he has no time to commit the crime, and no motive for the crime. The reason why he called the police was just to ask the police to help open the door. Police Officer Wang said with some tears and laughter.

In the case of death, the victim's family has the right to request a new investigation by the public security organs, and also has the right to request a further autopsy to clarify the cause of death.

Since the case has been handed over to our Serious Crime Team, it is our duty to conduct a more thorough investigation, and even if the final result of the investigation is an accidental death, we as police officers have done a good job.

The Interpol team has already conducted two careful on-site investigations, and presumably we have not been able to find any new clues using the same investigation methods and the same investigation equipment.

Now, the Forensic Science Department is conducting further autopsy work on the deceased Du Tan, and we have also started the scene investigation.

"Why did Du Tan's father insist that his son was killed?" During the investigation, Lin Zifan asked us seriously.

"It's not that he was killed, it's just that he can't accept the accidental death of his son......" I said in a deep voice.

On the sofa in the living room, the first batch of criminal police who came to investigate the scene had already drawn a white line on the sofa according to the location where the body was found.

Judging from the outline of the white line, the deceased was sitting with his back on the sofa with his head tilted back slightly. If the person has already entered a state of deep intoxication, this posture can indeed cause vomit to enter the trachea and suffocate.

Excessive alcohol consumption is harmful to health, so you should never live alone after being drunk.

This is a three-bedroom, one-living room, one kitchen and two bathrooms room structure, with an area of more than 180 square meters, and the location is very good, and the price must not be low.

The room is fully furnished, but it always feels like there is a little less fireworks, and such a big house is inhabited by one person, and it is indeed extraordinarily deserted.

Xue Hang is holding a professional investigation instrument to carefully observe the door locks and window traces of the house, if he kills, we first need to confirm how the murderer came in. This is the eighth floor, and the murderer must not have entered through the window, but there is no trace of damage to the door lock, so the murderer must have opened the door to enter.

Li Meng walked into the kitchen and checked the refrigerator and trash can. These two places are the key to investigating the scene, and can directly determine whether the deceased lived here for a long time.

If the murderer had lived here for a long time, there would have been plenty of food in the fridge and some leftovers in the kitchen trash can.

"There is really nothing to ask for here, not even pots and pans, not enough oil, salt, sauce and vinegar, Du Tan must not cook at home." Li Meng muttered, turned around and opened the refrigerator.

There is a lot of food in the refrigerator, but it is basically some quick food, such as fruits, drinks, chocolate, bread and other things.

"Not to mention the rich second generation, under normal circumstances, men who live alone don't like to cook at home. If you do too much and can't eat, if you do less, it's more troublesome, so it's more convenient to go out to eat or order takeout. I muttered and went into the kitchen to check.

"Any clues?" I picked up a baguette and looked at it.

"No, judging from the current situation, even if this is a homicide case, it has nothing to do with the kitchen." Li Meng also followed my example and picked up a baguette.

"There are so many kinds of bread that suit people's tastes, why do some people like to eat this kind of hard baguette like a brick?" I pursed my lips and put the baguette back in disgust, I wasn't used to it.

Li Meng's reaction to seeing the baguette was not so strong, after all, she was a returnee who had returned from studying abroad.

"Actually, the baguette was still very fragrant when it first came out, but I still can't get used to it." Li Meng muttered.

When we left the kitchen, Lin Zifan had just come out of the bedroom.

"Except for the master bedroom, which is occupied, the other two bedrooms have fallen a layer of dust, and it seems that they have been uninhabited for a long time." Lin Zifan said that he did not find any suspicious clues in the bedroom.

"Everybody likes to live in a big house, except when it's time to clean." Lin Zifan shrugged his shoulders and turned around and returned to the living room.

"It seems that this is really a case of accidental death, and the same is true for the serious crime team to investigate." I looked at the white line outline on the sofa in the living room and said quietly.

Just when we were carefully investigating the scene for several hours and classifying the case as an accidental death, Ren Qiushi of the forensic department suddenly called me.

"Lao Qin, I just conducted an autopsy on Du Tan's body, and the cause of his death was indeed suffocation, but I found a red and swollen ...... in his throat cover."