"The victim's ex-boyfriend, named Han Shengyan, claimed that he and the victim had a conflict over relationship issues. The time was around noon today..."
"This Han Shengyan has some mental problems, and his parents came with a diagnosis report and the like."
Chai Tong relayed the news he received, sighed, and put away his phone.
When it comes to psychopathic homicide, you can find logic in the investigation stage, but politically, it is difficult to connect it with logical issues.
In other words, Chaitong will eventually recede with this ebbing tide.
"Professor Chen, thank you for your hard work." Chai Tong took two steps forward, preparing to take Professor Chen back with him.
The murderers have all surrendered. Although a series of handling steps are still needed, for Chai Tong, this case is over.
Even if a forensic report is needed, it will still be Jiang Yuan or Wu Jun's job. Foreign aid like Professor Chen is not qualified to sign it.
Professor Chen stood up, feeling a little regretful, and said to Jiang Yuan: "I originally wanted to do front-line work again, but I still didn't come across a good opportunity."
Whether you are a forensic doctor or an anatomy professor, if you want to do front-line work, you must have dead people to cooperate. It is normal for Professor Chen to be unable to find him. In fact, in a place like Ningtai County, a murder case occurred.
As a result, the case was automatically closed without any investigation, which is perfectly normal.
The murderer this time is a typical urban murderer with some mental problems. He kills in passion and then escapes. Then he returns and surrenders under the persuasion of his family...
Although there are no statistical data, similar murderers are really ordinary.
Huang Qiangmin also came over and said to Jiang Yuan: "The on-site investigation is almost complete, let's just transport the body back."
Originally, only some physical examinations could be done at the scene, and the specific autopsy report would have to be done back home.
The surrounding police officers also stood up somewhat relaxed.
Jiang Yuan coughed twice and said, "Wait a moment."
"Huh?" Huang Qiangmin turned around in confusion.
"Who conducted the murderer's interrogation? It shouldn't have been done yet, right?" Jiang Yuan asked.
"The interrogation is ongoing." Seeing that Jiang Yuan had questions, Huang Qiangmin called back directly.
The call was connected and Huang Qiangmin handed it to Jiang Yuan.
After a few greetings, Jiang Yuan asked: "When asking for details, please confirm the time when the conflict broke out. It should be relatively accurate. Also, the number of attacks and whether there were turnarounds."
The first two sentences are considered normal, but the final turnaround mentioned by Jiang Yuan is more attractive.
Everyone present was a police officer, except for Professor Chen, but everyone basically understood something interesting.
Huang Qiangmin asked: "Is there any secondary injury?"
After hearing this, Professor Chen came over directly, looked at the body again, and said: "The back of the head was injured multiple times, but it is impossible to confirm that it was two injuries."
His academic level in anatomy is very strong, and he is also a good expert in forensic medicine, so he is very confident when he speaks.
Jiang Yuan nodded: "Judging from the trauma, it is indeed difficult to tell. However, I think there is something wrong with the timing of the blood stains. In addition, judging from the state of the body, the crime was not completed in one go."
"Bloodstains..." Professor Chen still has little experience. He wants to judge the time when the bloodstains were generated by directly seeing the bloodstains - it's not impossible for him to do it, but he may need to check the information and do some calculations.
After all, this is a very serious murder case. To give an accurate conclusion, the environment of the scene must be comprehensively considered, including whether there is direct sunlight, the temperature in the restaurant, etc.
Assuming that the victim died at noon, it would have been six or seven hours at most. If there was a second crime in the middle, and judging by blood, the time difference might be one or two hours.
In such a short period of time, whether the air conditioning is turned on in the restaurant, the intensity of the sun, and whether there is wind may all become key factors. Moreover, the conditions in different regions in different seasons are definitely different under different time dimensions.
.From a scholar's point of view, there are many sets of regression equations...
Of course Professor Chen cannot memorize these things. He is engaged in dissection, and the difference between him and blood stain analysis is like the difference between a crocodile and a snapping turtle.
But when it comes to checking now, Professor Chen actually feels that it is quite unnecessary.
He asked directly: "How long do you think the blood stains are?"
"There's an hour and a half." Jiang Yuan said there were whole hours and parts, because for this murder case, this time difference is particularly important.
At the same time, Jiang Yuan is also quite confident.
To be honest, for the current case, Jiang Yuan currently has too many means.
A fresh corpse that died at noon, faced with LV6 time of death identification, LV4 forensic pathology, and a full set of LV5 blood stain analysis, crime scene investigation, etc. To put it bluntly, Jiang Yuan knew better than the victim himself.
How did he die.
And Jiang Yuan's answer completely brought back the mood of everyone who had just relaxed.
Everyone is familiar with Jiang Yuan, and their confidence in him can be said to be stronger than that of their own wives.
Since Jiang Yuan mentioned the time difference issue, there are two explanations, one murderer or two murderers.
One murderer is easy, just interrogate the suspect who has surrendered now, but if there are two murderers, how to find the second murderer is no joke.
The survey boxes and other objects that were just about to be put away were now adjusted to brightness, and they continued to search for fingerprints and footprints.
Jiang Yuan changed his gloves and observed the blood stains while waiting for the results of the interrogation in the bureau.
Interrogation should not be a problem for criminal suspects who surrender. At the very least, it will be no problem to obtain some basic information.
Not long after, the call came.
Huang Qiangmin handed it directly to Jiang Yuan.
"Han Shengyan claimed that he did not turn back. As for the specific details of the violent conflict, Han Shengyan could not tell. The problem now is that he was stimulated by the incident and had a mental illness. His confession may be flawed," the policeman on the phone said.
Try to be as concise as possible, obviously knowing that there are changes on the scene.
"Where are Han Shengyan's parents? When did they meet Han Shengyan?" Jiang Yuan asked.
"Around 4 p.m.," the police officer from the station said.
Calculating the time, it is just enough to turn back once. But unless it is a deliberate turn back twice, otherwise, this time is already a little rushed.
Huang Qiangmin said at this time: "You can use your mobile phone to check the last time you connected to the base station."
This requires you to apply to a technical detective.
Jiang Yuan nodded and activated the crime scene reconstruction skill (temporary +1 and lasting for 535 minutes).
This skill was acquired recently, and its reconstruction effect comes not only from bloodstain analysis, but also from crime scene investigation, and even image enhancement and other skills.
As far as the scene in front of me is concerned, it is at least equivalent to the blood stain analysis level of LV6.
"The victim hit the wall first."
Jiang Yuan looked at the scene again, walked forward, called a technician to come over and take pictures, and said: "This place should be soaked in blood."
Professor Chen also walked over to take a look, nodded and said: "Indeed, it is, but it is normal for blood stains to form in a few hours."
"I bet there are still blood stains here." Jiang Yuan had said something before realizing that Professor Chen was a teacher, and said hurriedly: "What I mean is, judging from the blood-stained position, the victim should have moved.
"
"You made a bold bet." Professor Chen didn't know what his state of mind was at this time. The fact that a student who had only graduated for two years could grow to such an extent even made him confused about the capabilities of his school.
.
Jiang Yuan smiled, called two people over, and said, "Take the body away."
Then, the four people worked together to lift the body as lightly as possible.
After the body left, there were indeed obvious blood stains on the floor below.
Of course, there are many explanations for wiping blood stains. For example, if the deceased crawled hard before death, such blood stains may have formed.
However, crawling will obviously leave other traces around, such as bloody handprints or signs of exertion on the knees or feet.
Without these, and the body was lying on its back, the blood stains wiped off were probably passive displacement.
Professor Chen nodded slowly and couldn't help but said: "You really made a right bet."
Jiang Yuan acquiesced, this move is really difficult.
Director Chai Tongchai, who had been standing outside the circle and watching, suddenly felt particularly uncomfortable. Jiang Yuan's strength was a bit too strong. Moreover, such a powerful subordinate actually managed to kill him through his own fingers.
