The truth is, Conan asked Professor Agasa for help to design a small gadget.
Based on the vocal characteristics of Feng Jianxiong and Guo Fengshan, the recordings were scanned to obtain fragments of their conversations.
Then, by searching for keywords in the transcribed text, those audio clips were obtained.
"Little Conan, well done."
After giving a compliment, Shen Ting left the crime-solving group chat.
He originally intended to provide these recordings directly to the other members of the task force.
Then, if Guo Fengshan is interrogated again, these recordings might be able to get him to talk.
But Jiang Bingquan's sudden discovery of him was also good news:
"Team Leader Shen, thanks to you, we've hit the jackpot."
Police officers found a takeout bag in a landfill.
The address on the takeout order was Feng Jianxiong's apartment address, and the last four digits of the phone number were also Feng Jianxiong's phone number.
In addition to the takeout packaging, the delivery bag contained some common household items, and the police also found a cut medical bandage.
Technicians are taking samples of the strapping; they might find evidence that the suspect lied.
While Shen Ting was pleasantly surprised, he quickly frowned again, remembering the special nature of the cable ties:
"If it's a binding strap, can enough special physical evidence be extracted from it?"
This physical evidence needs to clearly indicate who used the straps to strangle the victim.
Moreover, both Feng Jianxiong and Guo Fengshan had access to the strapping.
Ordinary physical evidence such as fingerprints is probably not sufficient.
"It should be fine!"
Jiang Bingquan smiled and said:
"I also asked the appraisers about this issue."
They initially said it would be difficult to guarantee the collection of physical evidence.
Because if the murderer tightened the binding straps, he was wearing gloves or using a towel as a cover.
There's no way the murderer's biological evidence could remain on those binding straps.
However, after a simple examination, they found that the serrated ends of the strapping only showed obvious deformation when gripped and pulled tightly.
Moreover, the deformed shape is similar to the shape of a human's five fingers clenched tightly.
More importantly!
Technicians extracted a small amount of sweat residue from the severely deformed areas.
Team Leader Shen, you know him.
Human sweat has unique characteristics due to diet and hormones.
By analyzing the composition of the sweat, it can be determined which of the two suspects tightened the bindings, causing the death.
Shen Ting's eyes lit up, and he nodded in surprise:
"Then there's no problem."
The sun rises, and the morning light is faint.
The cold caused noticeable frost flowers to form on the windows of the investigation bureau.
Under the sunlight, it shines with a beautiful brilliance like a diamond.
The inspection of the strapping was completed around 9 a.m.
The sweat extracted from the area that was gripped and stretched tightly, resulting in severe deformation, was matched with the composition of Guo Fengshan's sweat.
Furthermore, the forensic experts provided evidence that Guo Fengshan's sweat penetrated almost to the very bottom of the serrated edges of the binding strap.
This requires a lot of force to do.
This situation will not occur with normal contact.
Furthermore, the state of deformation of the strapping is basically the same as the state of Guo Fengshan's right hand when his four fingers are clenched.
DNA from the deceased, Qi Shuang, was extracted from the buckles of the binding straps.
All this evidence indicates that it was actually Guo Fengshan who caused Qi Shuang's suffocation death by manipulating the straps.
After receiving the appraisal report, Shen Ting said directly:
"Director Jiang, based on the recordings I provided, interrogate Guo Fengshan again!"
Let's see how he tries to argue this time.
...
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