Miyun District Public Security Bureau!
Shen Ting found Qian Duoduo, the captain of the third team:
"Captain Qian, I have two ideas. Maybe we can check them out."
"OK!"
Qian Duoduo quickly said: “Advisor Shen, just say it.”
"One is Guo Honggang. He was the only one who suffered minor injuries in the explosion. I feel something is suspicious about that.
However, so far, no motive or evidence has been found for his crime.
Perhaps we can test the DNA of the child he and Xu Chanjuan are expecting to see if they match."
"And then there are these two people..."
Chen Ting took out photos and information of Xu Tuanjie's mistress and her husband.
“They are…
Is it related to the bombing?"
Looking at the photos of the two, Qian Duoduo was confused.
Although there are many people involved in this case, he doesn't remember these two people!
"The girl is Xu Tuanjie's mistress.
The man is her husband!
Three months ago, the two men conspired to defraud Xu Tuanjie of hundreds of thousands of yuan.
Moreover, Xiao San and Xu Tuanjie have been hooking up again recently."
Mistress?
Qian Duoduo looked at Shen Ting in surprise.
How did you find this out?
Xu Tuanjie's whereabouts are currently unknown. The investigation team has sent people to look for him, but there is no news yet.
But how long has Shen Ting been involved in the case, and he has even found Xu Tuanjie's mistress?
How did you find this?
Qian Duoduo was very confused, but did not express his doubts.
Because Director Wei Lianbing of the General Administration had given advance notice when he sent Shen Ting to assist in the investigation.
Whatever instructions Shen Ting gives, just follow his instructions strictly.
Stop asking unnecessary questions!
Qian Duoduo was confused at first, why couldn’t he ask?
As a result, Wei Lianbing looked down on him and said, "You won't understand anyway even if I ask you."
Instead, it delays the investigation!
Qian Duoduo recalled, and Shen Ting continued:
"The mistress and her husband are probably not the perpetrators of the bombing.
However, since they are involved in fraud anyway, I brought them back and asked about it.
Maybe there will be unexpected discoveries.
Especially, ask them if they know any secrets of the Xu family."
"no problem!
DNA test, catch the mistress, I'll do it right away...
By the way, Brother Shen, please wait in the conference room next door.
We're about to have a case discussion, come and listen and give us your opinions."
"good!"
…
Ten minutes later!
The conference room was filled with police officers.
After completing the task, Qian Duoduo began to host a case seminar.
"Everyone is almost here, let's start the meeting!
Let me first report the latest investigation results.
The technical team comes first!"
The forensic doctors, trace investigators, and on-site surveyors from the technical team stood up one after another to report their findings.
The content is not much different from the discussion results of the previous crime-solving group.
The forensic doctor confirmed that Xu Liting and Zhao Xinkai had injuries caused by intimidation and restraint.
It is speculated that the murderer wanted to obtain some information from the two people.
The knife formed by the eyes and palm should be the murder weapon.
It has the same origin as the brass plate found at the explosion site.
The video investigation team also checked the recorder of the exploded car, but found nothing.
The murderer killed Zhao Xinkai and Xu Liting in two hotels.
The surveillance camera only captured his silhouette, confirming that it was a person, but did not capture his face.
I can only confirm that he is of medium size!
But it looks stronger!
Regarding the specific information of the seven members of the Xu family, the police did not obtain complete communication and chat records, so their understanding was not as clear as that of the investigation team.
However, the police also made many discoveries during the crime scene investigation.
Especially the car explosion scene!
"Our on-site investigation team found residues of dinitrodiazophenol and RDX, also known as cyclotrimethylene trinitramine, in the exploded car.
Both of these are the core components of detonators.
The former is a blasting explosive commonly used by the people.
The latter, RDX, is the main explosive and can enhance the power of the explosion.
Judging from the explosion effect and radius, the murderer used a very large amount of drugs and was obviously aiming for death.
We also collected a lot of bomb fragments around the exploded car.
It was confirmed that the bomb was a remote-controlled time-delay bomb, and the remote control type was radio.
Because fragments of a 433MHz antenna were found at the scene.”
Inside the office, all the police officers were alert.
Obviously this discovery is important!
The investigating officer continued:
“We speculate that the killer was near the victim’s residence, observing the victim’s family.
After confirming that they had received the ransom text message, they all got in a car and went to Hengshui next door, where they controlled the bomb and started the countdown.
The car drove on the road for a while, the countdown ended, and the bomb exploded.
By doing this, the murderer can leave the crime scene calmly.
There will be no trace left at the explosion site, and no one will be photographed by passers-by with their phones.
"The murderer this time is very cautious!"
Qian Duoduo lit a cigarette and frowned slightly.
The current surveyor nodded: "As for the bomb, we have already contacted the radio detection station near the Xu family's residence.
Check whether there is any abnormal pulse signal in the 433MHz frequency band after the car is started.
If we can find the abnormal signal, we might be able to determine the exact location of the signal source and thus identify the murderer."
Qian Duoduo nodded, took a puff of cigarette, and looked at the other police officers:
"Any other discoveries?"
A young inspector stood up:
"Our Trace Detective Office found half a fingerprint on the bomb fragments, which should be from the murderer.
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