Forensic experts found a lot of fibers under Zhao Huimei's fingernails.
The forensic laboratory confirmed that the fibers belonged to clothing.
The fibers are covered with special oil stains.
This is likely a remnant left under Zhao Huimei's fingernails when she scratched the suspect's clothes during their fight.
Forensic experts also found some residue on Wu Liqun's linear contusion.
After examination by forensic experts, it was confirmed that the stain was indeed oil.
Moreover, they are of the same type!
"Oil stains?"
I remember that the son of the former village chief, Shen Bisheng, owned a restaurant.
It's perfectly normal for restaurant staff to have oil stains on their clothes and utensils while cooking.
Shen Ting continued to review the report with anticipation, but soon frowned.
"It seems I guessed wrong!"
The forensic laboratory determined that the oil stains in this case were mineral oil.
It also contains metal particles and graphite, as well as impurities from mechanical wear.
This type of oil stain is more likely to have come from mechanical repairs.
Kitchen grease is mainly composed of animal and vegetable oils.
The two are very different!
The forensic laboratory believes that both suspects are likely mechanical repairmen.
A wrench is a tool used in normal daily work.
"In that case, Zhao Weijun seems to be a bit more suspicious."
He undertakes construction projects and needs a lot of machinery.
There definitely needs to be a dedicated team of repairmen.
Secondly!
The DNA lab found no trace of the suspect's skin tissue under Zhao Huimei's and Wu Liqun's fingernails.
Perhaps because it was cold, the suspect was wearing many layers, so I didn't scratch the suspect's body directly.
However, the forensic examiner found a drop of mixed blood at the scene.
It's located at the foot of the bed.
It is speculated that Zhao Huimei injured her flat feet by using scissors.
The blood is a mixture of the blood of two people.
DNA labs are trying to differentiate between the two.
If the suspect's DNA can be successfully isolated, it can be used to try to match it with the current suspects or with a database.
In addition, during the on-site investigation, a footprint was found in the vegetable garden on one side of the courtyard.
The overall picture is not very clear, especially the latter half.
Overall, it should be size 43.
One-third of the outsole pattern corresponding to the forefoot is intact.
The shoe prints were different from those of the four adults in Wu Liqun's family.
Suspicion may come from the murderer.
Shen Ting carefully examined the shoe print, and it did indeed resemble the footprints with shoe covers left in the bedroom.
However, because the information was rather vague, he dared not draw a conclusion.
"But since they are confirmed to be unfamiliar footprints, the probability that they came from the suspect is still very high."
In addition to the technical department, the police officers who went out to conduct visits also brought back some miscellaneous information.
For example, Wu Liqun and Zhao Huimei have had several arguments recently over their son's education.
The gist is that Wu Liqun wants to let the animals roam freely.
Zhao Huimei wants to pursue elite education and wants to be enrolled.
Therefore!
On the night of the incident, Wu Liqun's parents vaguely heard arguing upstairs, but they thought it was just a couple having a fight and didn't dare to interfere.
Shen Ting uploaded all of this information to the case-solving group.
If group members are interested, they can take a look to see if there are any key details.
As for the investigation team, the first phase, which involved on-site investigation and interviews with relevant parties, has basically concluded.
The next step is to conduct an in-depth investigation into Shen Bisheng, Zhao Weijun, and Liu Guinan.
The most important focus is on Zhao Weijun.
Especially the workers responsible for equipment maintenance at his construction site.
Shen Ting then began to examine the shoe prints.
The investigation team has collected Liu Guinan's shoe print, Shen Bisheng's son's shoe print, and some of Zhao Weijun's men's shoe prints, and sent them to Shen Ting.
"There's something wrong with Liu Guinan's shoe print."
Although he also wears a size 43, his foot shape is quite different from the two people on the court.
“Shen Bisheng’s son is also not quite right.”
The shoe size is wrong; he needs to wear size 44 shoes.
Some suspects do deliberately wear clothes that are too small to mislead the police.
However, the shoe prints left by wearing shoes that are too small have unique characteristics that make them easy to distinguish.
However, this case is not like that.
Zhao Weijun's men had more shoe prints on their shoes.
Size 43, and with similar foot shapes, Shen Ting selected a few people.
The investigators were asked to further confirm where they were at the time of the crime and whether they had an alibi.
soon!
The footprints of the four men under Zhao Weijun who were responsible for repairing the machinery were also collected.
But upon closer inspection, Chen Ting noticed that the footprints of these four people were quite different from the footprints at the scene.
"Are these the only four people confirmed to be responsible for the repairs?"
Or, to put it another way, did Zhao Weijun switch the prince with a cat?
"This is Guan Guandu's responsibility," Shen Ting asked over the phone.
Guan Guan frowned and said:
"It was registered by the construction team, anyway, it was these four people."
There is indeed a possibility that they could have deceived everyone.
I'll have someone check the surveillance footage!
Are these really the four people who are inspecting and repairing the machinery?
"good!"
Shen Ting directly shared the construction team's surveillance footage and uploaded it to the case-solving group for group members to view.
Quite coincidentally, Guan Hongfeng left a message as soon as he joined the group:
"Look at these two, I have a feeling something's not right..."
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