Criminal Investigation Chronicle

Zhao Lei looked at Xiao Liu who looked longingly in front of him, and said slowly: "Didn't you read the file for that case? It's the same as what you read. Don't ask, have you finished writing the report on the fight yesterday?"

Xiao Liu laughed and lowered his head to write the report.

Zhao Lei saw that Xiao Liu was immersed in writing the report, and did not speak, but recalled the case that happened not long after he was reinstated at the end of April 2002...

On May 2002, 5, at around 15:9 pm, Zhao Lei, who was on duty at the police station, received a report that a traffic accident occurred in a street in the south of the city. A man was hit and killed on the spot.

When someone died, Zhao Lei didn't dare to delay, and rushed to the scene of the crime quickly.The scene of the crime was in a side street. The vehicle that caused the accident was a Poussin private car with double flashing lights on the side of the road. The perpetrator had been controlled by the traffic police.After revealing his identity, Zhao Lei entered the scene. Judging from the scene, the deceased was a middle-aged man with big arms and a round waist. Walking from west to east, the vehicle involved in the accident is also traveling from west to east, and people and cars are going in opposite directions.According to the measurement and calculation of the traffic police, when the incident happened, the speed of the vehicle that caused the accident should be between 60-70 kilometers per hour. When the deceased was found, it was too late to brake, and the deceased was knocked into the air by 14 to 16 meters.According to the description of the perpetrator, he was driving at a speed of 65 kilometers per hour. The deceased was originally walking on the sidewalk. When the car approached the position of the deceased, the deceased suddenly ran into the motorway, causing the perpetrator to have no time to react, and knocked the deceased into the air. Yes, then the perpetrator quickly stopped the car, got out of the car to check the injuries of the deceased, and saw that the deceased was bleeding from the mouth and nose, and his body was also limp. Trying to breathe, it was very weak, so he immediately called 120,110, 122, 120, but when the [-] ambulance came , the deceased is already dead.There were several witnesses around. According to the witnesses, it was indeed as the perpetrator said that the car that was driving normally was driving at high speed, but the deceased suddenly ran in front of the car and was hit and flew.

On the surface, it seemed that this was a traffic accident, but Zhao Lei felt that it was a bit strange. He checked the topography of this street. The innermost part was a small road, and the green belt was half a meter high to the outside, the sidewalk to the outside, and non-motorized roads to the outside. Driveway and motorway, according to common sense, the car is driving on the motorway, and the deceased is walking on the sidewalk, and there is still a distance of more than three meters before running to the motorway. unreasonable.Zhao Lei inquired about the identity of the deceased, who was a cook in a larger restaurant not far away, named Liao Qing.Zhao Lei looked at the brake marks left by the emergency braking of the car on the ground, then walked to the sidewalk, and continued walking westward for more than ten meters, carefully inspecting the situation on the road, calling for technicians, pointing to the green belt, and having people walk on the green belt and the green belt. Look for clues in the path inside the green belt.

On the other side, the police contacted several colleagues and the lobby manager of Liao Qing's restaurant, and they had already arrived at the scene.Zhao Lei approached Liao Qing's colleagues and manager to inquire and learned that Liao Qing was 33 years old, unmarried, a local, and had been working as a chef in a restaurant for more than two years. Chefs are usually in the kitchen and rarely have contact with customers, so Liao Qing is always kept in the restaurant, and Liao Qing likes to drink. Every night after work, he has to drink a lot of wine. According to the manager's original words, "Maybe this kid Only after drinking too much did he run onto the motorway."Zhao Lei asked about Liao Qing's basic situation. Apart from his bad temper and average relationship with everyone, Liao Qing has no bad deeds and no enemies.

Zhao Lei thought for a while, and then asked, "Where does Liao Qing's family live, and what kind of transportation do they take to and from get off work every day?"

His colleague replied: "Liao Qing's house is two kilometers to the east, and the restaurant is only three kilometers away from his house. He usually walks to and from get off work."

Zhao Lei: "Does Liao Qing take this route to and from get off work?"

Another colleague took the words: "Yes, I leave work later than him, and my home is a little farther away. I have to go a few kilometers east. I see him walking this way every day when I ride my bike."

Zhao Lei: "Does Liao Qing drink every day? How is the capacity for alcohol, how is the wine quality, and how much alcohol do you usually drink?"

The manager said: "Liao Qing drinks every day, and I also like to drink a few sips in restaurants. I think I can drink well. Erguotou can drink seven to eight taels without getting drunk, but in the store we usually eat half a catty per person. No, today Liao Qing also drank half a catty at night, he should have a good capacity for alcohol, I have never seen him drink too much."

Zhao Lei: "Then why did you say that Liao Qing probably ran to the motorway after drinking too much?" Zhao Lei asked sharply.

Hearing this, the manager hurriedly explained: "Officer, don't misunderstand, it's like this, although Liao Qing is usually not very good-tempered, he is still polite to me, especially since we are also drinking buddies, we have a drink every night. Chatting happily, even today, Liao Qing drank alone without saying a word, and finished drinking half a catty of Erguotou in a few sips, while I drank slowly. When you called to inform me, I hadn't finished drinking yet. You also know that if you drink this liquor in a hurry, you will get drunk easily."

When Zhao Lei heard this, he immediately became vigilant: "Tell me carefully, what is the reason for Liao Qing's abnormal behavior today, is there any stimulation, or did he quarrel with others?"

Several colleagues and managers thought about it for a while, and they all said that Liao Qing didn't quarrel with others. Besides, it was common for Liao Qing to quarrel with others, so he wouldn't be so angry and drink alone.At this time, a colleague said: "Officer, Liao Qing just finished his work tonight, and Liao Qing went out to use the toilet. It seemed that he was in a bad mood when he came back. I didn't ask, and then he drank half a catty by himself during dinner." Boozy. As for what happened when he went to the toilet, we can't speculate."

After listening to the narrations of several people, Zhao Lei decided that this was not a traffic accident, and his intuition told him that it was a murder case.Then Zhao Lei ordered Liao Qing's body to be taken back, and the perpetrator and several witnesses were taken back to record statements.Zhao Lei followed his colleague Liao Qing to the restaurant to check, focusing on the toilet.The toilet of the restaurant is in the courtyard of the restaurant. It is not big, and men and women are separated. After careful observation, Zhao Lei found some burnt paper ashes in a urinal. Putting on gloves, Zhao Lei carefully collected the paper ashes into the evidence bag , Check it carefully again, make sure nothing is missing and leave.

The preliminary autopsy report showed that Liao Qing had an alcohol content of 110 mg/ml in his body, and he was in a state of intoxication. The cause of death was multiple fractures throughout the body caused by a violent impact, puncturing internal organs and several major arteries, and no other abnormalities were found on the body except the impact injury.From Liao Qing's call records, he did not find any suspicious calls or text messages.From the scene, technicians found that before Liao Qing was hit by a car, several shoe prints, size 42, men's shoes, were extracted on the innermost path.It is speculated from the shoe prints that the height of the person who left the shoe prints should be between 1.7m1.8 and [-]m, but the shoe prints are shallow and difficult to observe, and the rear foot prints are clearer. From a technical analysis, it is likely that someone wore them. This will cause a large error in judging the person's height and cannot be used as a reference.According to this, the person is either very thin or not that tall.

Zhao Lei thought about what Liao Qing's colleagues and the manager said, and speculated that Liao Qing must have encountered something while going to the toilet, which made him feel depressed and drink alone.And the burnt paper ashes found in the toilet may be what Liao Qing encountered, which caused his mood to change.But unfortunately, because the paper ashes have been soaked for a long time, they have not been able to restore what is on the paper. We can only roughly infer that the paper ashes are equivalent to a piece of 32-carat paper, and no other useful information can be obtained.

However, no useful information was found on Liao Qing's interpersonal relationship and social background, and the case fell into a stalemate.

On May 5, Zhao Lei passed the relevant information to Lin Chong, and then called Lin Chong to explain the case to Lin Chong. Lin Chong listened to it, thought for a while, and asked Zhao Lei to look for him at the gate of the police academy at night.

At around eight o'clock in the evening on the 16th, Zhao Lei came to the police academy. Lin Chong didn't answer the phone, so he sent a text message to Zhao Lei, saying that he was in a meeting and asked Zhao Lei to wait for him outside the police academy.Zhao Lei wandered around outside the police academy alone, a little bored, and lit a cigarette.I also received a message from Lin Chong: I know the method used by the murderer, so listen carefully.Zhao Lei looked at the text message, and then regained his energy, staring at the phone, ready to read Lin Chong's next text message.