When a murder occurs, the police at the place where the crime occurred will use all their police resources to solve the case.
What's more, seven corpses were poured into the bridge pier.
Li Donglin of the Second Criminal Investigation Division of the Provincial Department is personally in charge, and everyone from the QZ City Criminal Investigation Detachment, the major criminal police brigades, and the police station are working on this case.
Every lead will be followed up as soon as possible.
Although Lu Chuan was at the rear, he could still feel the tension on the front line.
Because in less than three hours, the identity information of corpse No. 6 was fed back to the rear.
"Designer?"
The owner of corpse No. 6 is Wang Xiaobo, an engineering designer.
However, unlike ordinary designers, Wang Xiaobo studies intelligent robots.
"Director Li, they are already investigating. The company Wang Xiaobo worked for back then had relatively cutting-edge technology."
Zhang Yuanchao looked at the relevant information and chatted with Lu Chuan to explain.
According to the current investigation results, this seems to be an ordinary industrial espionage case.
But the company Wang Xiaobo works for is just an ordinary civilian company.
According to the data, there are only some relatively high-end program designs in drone control.
When it comes to secrets, there are some. After all, they are business secrets.
But when it comes to killing people, it doesn't seem to reach this level.
Lu Chuan heard many similar cases when he was in college.
Most commercial espionage cases are bribed with money, and are usually cases of the Economic Investigation Detachment.
Not many are involved in murder cases.
Shaking his head, Lu Chuan continued to do his work.
There is a division of labor in solving crimes, and Lu Chuan's battlefield is at the rear.
There are seven skeletons, and so far, the identities of four people have been confirmed.
Investigations surrounding their interpersonal relationships are also progressing rapidly.
Lu Chuan continued to conduct identification and analysis on the bones.
Skeleton identification and analysis is actually an important branch of identification and analysis of human remains.
The identification and analysis of human remains does not necessarily mean that it must only be done on dead people.
Disability assessment of living people is actually part of it.
"This time I will mainly tell you about the gender identification of the skeleton."
Lu Chuan was operating and Zhang Yuanchao was explaining.
Most of the students who came with Zhang Yuanchao this time were young forensic doctors who had rich theoretical knowledge but relatively little practical experience in the field.
It is not a common thing to encounter seven skeletons in one case.
Generally speaking, very few forensic doctors have accumulated experience in skeletal identification.
Some people can meet each other in one year, and some may not even meet each other in three or five years.
There are two skeletons in Zhang Yuanchao's studio, but they were donated by the hospital.
The bones were almost pulpy after being examined by these forensic doctors. They were familiar and could not be more familiar. Moreover, after a long period of touching, the condition of the bones, especially the surface, had changed a lot.
Where is it like now, this is the first scene of the crime.
Skeletons that have been sealed for fifteen years have been sealed in the cement piers. Each skeleton is the best teaching tool.
If these skeletons can be thoroughly analyzed, these students will almost be ready to teach.
In the future, after two or three more cases, the level will be greatly improved and consolidated.
Lu Chuan is currently measuring the size of a skeleton's pelvis.
"The shape of the pelvis is the most accurate and important basis for identifying the gender of a skeleton."
"The male pelvis is narrow and tall, while the female pelvis is wide and short..."
"Come and take a look at the pelvis of this corpse. Is it male or female?"
Several forensic doctors came forward and judged at a glance: "Male."
Zhang Yuanchao was not even interested in affirming this basic judgment.
The shape of the pelvis between men and women is quite different, let alone forensic medicine.
Most people, as long as their eyesight is normal, can tell the difference.
The key is that not all skeleton cases result in complete skeletons.
Moreover, the difference between the pelvis is not necessarily narrow or wide.
How to determine gender if there is only a small part of the pelvis?
"In most skeleton cases, the proportion of mutilated corpses is larger, so if the skeletons found are not complete, other methods must be used to judge."
Zhang Yuanchao began to give an example: "For example, the bone density of the pelvis of men is higher, while that of women is lower."
Bone density is relatively easy to measure. Generally, criminal investigation detachments have instruments for measuring bone density.
Of course, most of the time there aren't that many skeletons to test.
This instrument is not idle either. Usually, many criminal police officers will ask forensic doctors to test their bone density for free.
This way there is no need to take a test during the physical examination.
The money saved can be used for other projects.
Recently, the provincial department has implemented a packaged physical examination for police officers across the province, which means that the physical examination fee for each person is different according to age.
Everyone can freely choose and match the items in the physical examination menu according to their own physical conditions.
Except for some necessary height, weight, eyesight, etc., everything else is a supermarket choice.
If you lose one bone density, you can choose another one.
"The obturator foramen of the male pelvis is oval and female is triangular."
"The ischial tuberosity is inverted in men and valgus in women."
"The male sacrum is narrow and long, and the female sacrum is short and wide..."
Every time Zhang Yuanchao introduced a part, Lu Chuan would point out the location of different points for everyone to watch.
"Oh, this corpse is female..."
"Mr. Zhang, if the pelvis is not found, other bones can also be used to identify the gender, right?"
Zhang Yuanchao nodded, of course this can be judged.
"When you were in school, you should have learned that the most reliable way to determine the gender of a skeleton is based on the shape of the pelvis."
This is determined by the different physiological structures of men and women.
The female pelvic shape is the most conducive to fertility.
The shape of the male pelvis is conducive to the conduction of force.
"Another part that can be used to determine the gender of a skeleton is the skull. Generally speaking, male skulls are thicker, with a rougher surface and higher bone density."
"But there are some special women, girls with male faces, that is, although they are female, their appearance is more like men."
"There are also some special men with male-female faces, feminine looks, small frames, and tend to be more feminine."
Zhang Yuanchao walked to Lu Chuan and picked up the skull of Skeleton No. 7.
"However, the mandibular angle of the skull is regular. If it is less than 125 degrees, it is a male."
"In addition, determining gender requires a comprehensive judgment based on bone fragments, vertebrae, sternum, etc."
During the teaching process, Zhang Yuanchao asked Lu Chuan to scramble the bones, and then asked the students to comprehensively determine the gender of the owner of the bones based on the only few bones.
Lu Chuan often felt that time always flew by when solving a case.
The forensic laboratory has issued identification and analysis reports for the seven skeletons.
Zhang Yuanchao's teaching activities for the young forensic doctors who came with him also came to an end for the time being.
The investigation of cases on the front lines has also made great progress.
