Serious Crime Unit 1

Chapter 1155 Death of Professor (2)
"I have been a policeman for 26 years, and I am very experienced in judging whether a person is dead. You don't need to question it. You and Professor Liang must have a deep relationship. It's not that I don't believe it, it's just that I don't want to believe it. Please forgive me and accept it. Pan Qi patted Qin Dong on the shoulder and said.

Qin Dong suddenly squatted on the ground, covering his eyes tightly with his hands, tears bursting out from his fingers, and he whimpered, and a heart-piercing pain flowed throughout his body.

Pan Qi wanted to call the criminal police captain of his branch, but after thinking about it, he thought it was safest to call Jiang Yiming, so he retrieved Jiang Yiming's mobile phone number from his address book and dialed it. The call was connected as soon as he dialed: " Team Jiang, we received the alarm and went to the Wenxin Building in Liyuan Community. We found Professor Liang Xuan in Room 2204 strangled to death in the living room. Please come and investigate the scene."

"Oh? Are you sure it was homicide?" Jiang Yiming asked.

"It can be confirmed that there were strangulation marks on the neck of the deceased."

"Okay, protect the scene and we'll arrive immediately."

25 minutes later, Jiang Yiming led the No. 1 crime team to the scene. Pan Qi briefly explained the situation to Jiang Yiming and left with the two policemen.

Everyone laid out the survey treads, put on shoe covers, gloves and hats, and entered the site.Zhou Ting was responsible for shooting on-site video and photography; Wu Jiang and Xiao Ke were responsible for examining traces, extracting fingerprints and shoe prints, as well as hair, dander, body fluids and other biological samples.Lu Yingying did not come today. She led the visual investigation team to review the surveillance video of a disappearance case.

Wen Xiaorou was responsible for checking the surveillance videos around the scene. After checking, she went to the surveillance room of the community to check the surveillance videos.Jiang Yiming was the last to enter the scene.

This is a house with three bedrooms, one living room, one kitchen and three bathrooms, about 140 square meters, with two bedrooms, a study room and a living room.The master bedroom was used by Liang Xuan. There was a large picture frame hanging on the wall. Liang Xuan was standing on the left, a young woman was standing on the right, and in the middle stood a beautiful and lovely girl, who should be the daughter of Liang Xuan and his wife.The photo was taken 10 years ago.

Jiang Yiming came to the second bedroom. There was a large bed in the center of the room. There was a small photo frame on the bedside table. She was Liang Xuan's daughter. She was about 22 years old. She had regular features, fair skin, a straight nose, and bright eyes. It has a special light, elegant temperament, and a scholarly atmosphere.

Jiang Yiming came to the study again. There were mahogany bookcases as high as the ceiling on both sides of the study. Most of them were professional books, which he couldn't understand at all.There is an Apple laptop on the desk facing south, with an external 27-inch display screen.He touched the unclosed computer with his gloved hand and found that the keyboard was very clean and must have been used frequently.

One toilet is public and the other is in the master bedroom. All the windows in the house are locked from the inside. Even a mosquito cannot fly in through the gaps in the windows and doors. In other words, the site is completely enclosed. If the murderer wanted to kill Liang Xuan, he could only enter through the door of the living room.

Jiang Yiming also took out his mobile phone and took pictures of the lock bolts one by one. All windows and doors were made of thickened soundproof glass. The window and door frames were made of aluminum alloy and were deeply embedded in the wall. The murderer could not remove the windows and doors. Committing a crime on the spot.

Jiang Yiming came to Luo Jin, squatted down and asked, "Luo Jin, did Liang Xuan commit suicide?"

"It's definitely homicide. You can't commit suicide by strangling yourself."

"Are there any fingerprints on the pinch mark?"

"No, the murderer committed the crime while wearing gloves. He must have counter-investigation capabilities. He knew that not wearing gloves would leave fingerprints and biological samples on the neck of the deceased."

"Can you tell the height of the murderer from the pinch marks?" Jiang Yiming knew that the length of the pinch marks is equal to the length of the murderer's fingers, so he can judge the height, but the weight cannot be judged, because some murderers are very thin but have larger fingers. For example, people who often do rough work have wider fingers than ordinary people.

"Judging from experience, the murderer is about 170 to 172 centimeters tall. He should be a man, because the murderer is very strong. Although Liang Xuan is a 62-year-old man, he is strong and has a certain ability to resist. He is extremely strong. Some women couldn't strangle him to death. And the murderer strangled him to death with only one hand, so the murderer is most likely a young and strong man."

"Approximate time of death?" Jiang Yiming asked, looking at the body leaning against the wall under the window.

"The corpse spots are all deposited under the buttocks, thighs and calves of the corpse, indicating that this is the first scene and the body has not been moved... Judging from the corpse spots and rigor mortis, combined with the analysis of rectal and ambient temperature, the deceased He died between 9pm and 12pm last night, the specific time will not be known until the autopsy results."

"I heard from Pan Qi that Liang Xuan is a semi-retired professor. Who would attack such an old man?" Jiang Yiming asked, looking at Liang Xuan's face twisted in pain. "This will have to wait until we go to investigate. I know Professor Liang. He has made great contributions to the country. It's a pity... alas!" Luo Jin shook his head and didn't want to continue.

"I think this case is not difficult to solve. First of all, the scene is a secret room. The murderer can only enter through the door, and Liang Xuan's consent is required to enter; secondly, the murderer should be Liang Xuan's relative and friend, and Liang Xuan let him in ; Third, the murderer may have copied Liang Xuan’s fingerprints and secretly unlocked the door."

"The third possibility is relatively small, because Liang Xuan died in the living room. If he uses a fake fingerprint to unlock the door, the door lock will make a 'beep' sound, which will arouse Liang Xuan's alert, because the door lock of my house It’s the same brand as the door lock of Liang Xuan’s house.”

Jiang Yiming nodded and fell into deep thought: Assuming the murderer is Liang Xuan's relative or friend, then who could it be?

"Team Jiang, the survey is done, shall we call it a day?" Wu Jiang walked over and said to Jiang Yiming, who was thinking hard.

"Oh, okay, let's call it a day. Have you found any valuable clues?" Jiang Yiming asked.

"No directional evidence was found. We have inspected all rooms and furniture and extracted 5 types of fingerprints, a total of 35. The footprints on the ground are all left by the slippers on the shoe rack. There are no patterns on the bottom of these slippers. They are Warm shoes made of plush, there are four pairs of identical slippers on the shoe rack, regardless of gender.”

"Were any valuable fingerprints found inside or outside the windows and doors?"

"We have inspected it. The fingerprints inside and outside the windows and doors are all Liang Xuan's. Of course, there are also a few unclear fingerprints that have been covered by dust. They were left long ago and are worthless. Moreover, all the windows and doors are It was locked from the inside, and there was absolutely no way the murderer could have climbed in through the window."

2
After the autopsy results came out, Jiang Yiming called everyone for a meeting in a small conference room.As soon as he got to work this morning, Fang Lihua called Jiang Yiming to inquire about the case, and Jiang Yiming reported truthfully.Fang Lihua said that Deputy Director Zhang Lan of the Department of Science and Technology called him and hoped that the No. 1 Serious Crime Team would solve the case as soon as possible.Although Fang Lihua did not set a date for solving the case, Jiang Yiming still felt pressure.

"Bureau Fang called me and said that the superior leaders attach great importance to this case and hope that the case can be solved as soon as possible. I promised Bureau Fang...Luo Jin, please tell me the autopsy results." Jiang Yiming looked at Luo Jin and said.

"The deceased Liang Xuan was a homicide. His hyoid bone was fractured under heavy pressure, and his thyroid cartilage was also fractured longitudinally. There was feces overflowing from the anus, and urine also flowed out of the urethra. This is a typical sign of strangulation. The murderer used one right hand to kill Liang Xuan pressed him against the wall and strangled him to death, which shows that the murderer was very strong. No matter how hard Liang Xuan struggled, he could not escape the hands of the murderer. The time of death was between 2:20 and 21:24 on February [-]."

"Are there no biological samples or fibers in the nails of the deceased?" Wu Jiang asked.

"There were no biological samples such as blood, skin tissue, hair, etc. in the fingernails of the deceased. However, there were some suspicious substances that have been sent for testing. I looked at them with a magnifying glass. They looked like acrylic. I hope that after the results come out, we can distinguish them from acrylic." Find out the murderer’s information from the ingredients.”

"Under normal circumstances, Liang Xuan would hold the murderer's hand tightly, and Liang Xuan is a new energy research expert. He should know to scratch the murderer's skin and leave the murderer's DNA information to us, but he did not do this , indicating that the murderer was wearing gloves and clothes with tight cuffs." Xiaoke said.

"Xiaorou, please introduce the distribution of monitors near the scene." Jiang Yiming said.

"I checked with an anti-peep detector and found that there are no monitors installed in Liang Xuan's home. There are no monitors at the door and stairs of his home. Only high-definition monitors are installed in the elevators. There are also monitors in the lobby of Wenxin Building. There are a total of 96 public monitors in the entire community. Monitor. If the murderer climbs up the stairs, he can avoid the monitor in the elevator, but he cannot avoid the monitor in the lobby." Wen Xiaorou's voice was as crisp and sweet as a lark.

"Luo Jin said that Liang Xuan's door lock is an electronic lock with a microchip that can recognize fingerprints and faces. It is also smart. It is difficult for fake fingerprints to escape the chip's discerning eye. Xiaorou, Yingying, you two have What do you think?"

"Well, Liang Xuan's electronic door lock is a Rock brand smart electronic lock. I checked online and found that this kind of lock is indeed very good. It is difficult to deceive a fake fingerprint, unless of course the forger is very skilled. This lock will automatically record the number and time the owner enters the house, and the data can be saved permanently. As long as we find a way to enter the microchip of the lock, we can know how many times Liang Xuan opened the door when the crime occurred, which will be helpful for us in handling the case. It helps a lot." Wen Xiaorou replied.

"Old Wu, have the extracted fingerprints been compared?"

(End of this chapter)