Criminal Technology Brigade of Longhua Public Security Sub-Bureau
(Former Technical Squadron of Longhua Public Security Bureau Criminal Police Brigade)
Deputy battalion commander Xu Wei on the first police day
Tell reporters about a murder of his wife
Pass through the half of the vanished wires
The "suicide case" brought up is actually a "wife murder case"
Is this a common suicide case?
The case occurred in an old community on Binya Road in Haikou. One night, a resident surnamed Cha reported to the police that his wife had hanged herself at home.
Xu Wei inspected the site
When Xu Wei and his colleagues arrived at the scene, the police officers at the first jurisdictional police station had already done a lot of work, including evacuating onlookers and protecting the scene. "It was a two-bedroom suite and the crime took place in the master bedroom. The victim said the boy, who was about 10 years old, was doing homework in the second bedroom. "A colleague at the police station told him the deceased had long suspected her husband was having an extramarital affair. He was suicidal, repeatedly threatened to kill his child, even climbed up to the roof with his child and threatened suicide, and also committed suicide by opening the gas canister at home, and the police department had many police records.
In addition, the husband of the deceased claimed that his wife suffered from severe schizophrenia and also issued a medical certificate from the hospice hospital.
Everything seems so logical, is this really a common suicide case? Xu Wei did not rush to conclusions, but arranged for a crew member to go to the scene to conduct a detailed investigation. He pulled the deceased's husband aside for questioning.
Half of the wires were found missing at the scene
Cha said that before the incident, he was tutoring the children in the second bedroom with homework, while his wife was resting in the master bedroom.
At 8 p.m., he came to check on his wife while he was still in bed.
When he returned at 10:00 p.m., he found that the lights had been turned off. When he tried to enter the master bedroom to turn on the light, he found his wife hanging on the power strip in the doorway of the master bedroom. Without moving, he rushed to the kitchen and found a kitchen knife, and the wires of the power strip were also cut. At this time, the wife showed no signs of life.
"Boss, something happened." At this time, coroner Wang Xiaogang quietly came to Xu Wei's side, "Under the action of gravity, the strangulation marks on the neck of the hanged person should be in the shape of a 'V', but the strangulation marks of the deceased are obvious." "'One'." 'Glyph. ”
Li Deng, a technician in charge of track inspection, also came to tell him that he found the incision a bit strange and did not match at the two ends as to the claim that the deceased's husband had cut the wires with a kitchen knife. Not at all. What's going on?
Xu Wei posted the entire branch exit and found the answer: "The length is not right, there is one less piece in the middle!" ”
Comprehensively judged, it should be that someone wants to hide something. Although there were no obvious injuries on the surface of the body, he chose to immediately report to the higher sub-bureau and request an autopsy.
The autopsy took five hours
Cha has been walking around the stage and communicating with Xu Wei many times: "Don't hurt my wife anymore, let her be buried in the ground, okay?" "What can this find?" Xu Wei solemnly told him that this was a matter of human life, and if there was any doubt about the matter, the public security organ had the right to force an autopsy. Mr. Che stopped talking after listening and shook hands with Xu Wei. Xu Wei obviously felt that this handshake was very hard and unnatural.
"Focus on examining the subcutaneous areas such as the scalp, back and fingers of the deceased." On the dissection table, Xu Wei communicated with his colleagues, and the facts were not unexpected. Subcutaneous bleeding spots are found in all three sites.
Xu Wei closed his eyes, and a picture appeared in his mind: the back of the deceased's neck was strangled by a wire, she used her hand to pull the wire to survive, fell to the ground in a struggle, and hit her head on the ground. On the floor, the person behind her supports her back shoulder blade with her legs and tightens the wires with her hands until the deceased stands still...
Xu Wei said: "Call Cha and tell him that he can come over and go through the formalities and bring his wife back for cremation. ”
Search the trash can for physical evidence
When Cha arrived at the Longhua Public Security Bureau, what awaited him was a pair of cold handcuffs. But in the interrogation room, Cha was extremely uncooperative: "Why did you arrest me?" After learning the situation, Xu Wei told the colleague who asked the question, "I will meet him."
When Xu Wei finished talking about the entire murder process inferred from the investigation and autopsy, he made a mistake: "How do you know?" ”
"Not only do I know that you strangled your wife, but I also know that you cut off a wire and hid it to hide the fingerprints on the wire, you say! Where did you throw it! ”
"The dumpster in the green belt below..."
Xu Wei and his colleagues rummaged through the trash cans and found that half of the wires were missing
Xu Wei cursed secretly in his heart, and immediately gathered a team of colleagues, "Go, put on a mask, and go pick up garbage!" ”
Heat, burning heat and foul odor. Fortunately, the search for physical evidence took "only" two or three hours, and half of the disappeared wires were found.
Get evidence where many people can't
The "suicide case" turned out to be a "wife murder case". In the subsequent arrest and trial, Xu Wei and others grasped the evidence of every detail without error, and obtained the approval of their superiors.
"Trial-centered, evidence-centered, this is the direction of our work." Xu Wei said that in fact, as the technical force of the sub-agency, most of the time, they are not involved in major affairs, especially now that the end of the year is approaching. There are many cases of burglary, pickpocketing, and car smashing. As a technical policeman, he uses his power all the time, while collecting evidence in places that many people can't see.
After putting on the safety rope, Xu Wei was hoisted to the outer wall of the 28th floor to search for footprints, fingerprints and other evidence
Financial theft cases are directly related to the happiness of the masses, which requires technical police to work more meticulously, search every corner for fingerprints, hang on the outer wall of the 28th floor to find footprints, rummage through garbage cans, and enter the sewers. Daily food. Xu Wei said: "Without evidence, any work may be futile. It is understood that the Longhua Criminal Technology Brigade has made outstanding achievements in the investigation of the "one long and four musts" at the scene for three consecutive years and has been commended by the Ministry of Public Security. In 2019, the Longhua Criminal Technology Brigade won the collective third-class merit. Both won the first prize in the competition and the first place in the 2020 Public Security Organ Examination Competition.
Source: Xinhainan client, Nanhai Net, Nanguo Metropolis Daily