After attacking the person on duty, the criminal suspect did not pause or hesitate at all. He directly stepped forward to take the other person's access card, and then swiped the card to enter the building. What does this mean?
This shows that the other party is quite familiar with the floor layout of the entire construction site, and clearly knows that the person on duty who was killed will be. Where the access card was placed, whether it could be opened, etc., the other party did not explore or hesitate at all.
An acquaintance committed the crime!
Even if the crime was not committed by an acquaintance, the other party must have frequently visited this Dongfang construction site and was familiar with the situation inside. At least he could have seen the process of the person on duty or other personnel on duty taking out the access card and swiping the access control.
The scene in the lobby ended here, and then the camera turned to show the surveillance screen in the corridor on the second floor of the construction site. After seeing the other party coming out of the stairwell, he went straight to an office on the left side of the stairwell.
After hearing the sound of an attack, I saw the suspect escorting an officer on duty out. The suspect raised his hands in the air and hit the back of the head with the attack.
There seemed to be no conversation between the two people, and they went directly to the warehouse. After the officer on duty opened the attack warehouse, the other party launched the attack without any hesitation!
"Stop."
There is a special camera at the entrance of the raid warehouse. Anyone who passes by or enters the raid warehouse facing the raid warehouse will be recorded by this camera.
The criminal suspect didn't seem to have any intention of destroying the surveillance footage inside the construction site. All the other party's actions were under the surveillance footage.
Of course, the suspect was not unprepared. When the other party entered the construction site, his face was wrapped and he wore gloves, so he would not leave any traces.
This is also the main reason why the other party dares to be exposed to surveillance because they are so confident.
It was precisely because of this that the other party did not damage the surveillance system, which allowed Lu Chuan and the others to see clearly some of the details of the other party when they opened the attack library.
The usual management model used in warehouses on construction sites is a two-person management model.
Under normal circumstances, the warehouse inside the construction site has either two locks or one lock, as well as a password.
In the case of double-person management, the keys to the two locks are kept by two different people. When opening the warehouse, two people must be present at the same time, and an application report needs to be filled out.
Or one person holds the key and the other person holds the password. Only after the key and password are entered correctly can the attack library be opened at the same time.
The warehouse doors in the Dongfang construction site have not been replaced, because if they were replaced, all the new warehouse doors would now be open with locks and passwords.
The raid warehouse at the Dongfang construction site adopts a two-lock mode, which means that the suspect can only open one when he takes the person on duty and comes to unlock it.
Surprisingly, when the on-duty officer opened one of the locks, the suspect suddenly attacked directly. Then he took out a key and opened the other lock.
"Today, let's play the video just now of killing the duty officer in the duty room."
"Okay!"
Soon, the video just finished playing.
Lu Chuan observed carefully.
It was found that the suspect should have also taken the keys when he escaped from the access card on the person on duty.
However, because the duty desk blocked the surveillance, Lu Chuan did not see what the other party got. He only saw that the other party took out the access card and opened the door, so just now he thought the suspect just took the access card.
But now it seems... Lu Chuan looked at Qin Jun.
It was obvious that the other party had discovered this situation a long time ago. People in the Qingzhou City Public Security Bureau were not all fools. Yesterday, they did not rest or sleep all night after the crime. Some details of the crime scene were also explained clearly to them.
Qin Jun sighed: "There is a problem with the management of assault weapons in the Dongfang construction site. According to normal management procedures, the two keys should be held by two formal personnel on duty. If a person on duty is on duty, , the other person on duty can take the key home.”
Because normally, the on-duty personnel themselves are equipped with raids, so they do not need to open the raid library. If an emergency occurs, the duty staff at home can also come to the construction site to open the raid library together.
"But the storage method adopted here at Dongfang Construction Site is that the person on duty keeps one key, and the other key is kept at the duty desk by whoever is on duty. The criminal suspect took away everything except the access card. In addition, there should be a key.”
"Has the body been examined?"
"We have checked, and the duty desk has also checked, and it is confirmed that the key was indeed taken from the duty desk by the criminal suspect."
In this way...
Lu Chuan didn't worry about whether the current process for managing weapons attacks at Dongfang Construction Site was correct.
"Then it can basically be determined that an acquaintance committed the crime."
"It's possible."
Please...you...Collect_6Ⅰ9ⅠBookⅠ(Six\\\Nine\\\Book\\\!)
"It's not possible, but it must be an acquaintance who committed the crime. The other party was very aware of the management model of warehouses like Dongfang Construction Site, so when he came up, he attacked and killed the person on duty without hesitation, and got the access card and key. After that, he And forcing the person on duty to open the attack warehouse shows that the other party is very familiar with the entire internal management process of the Dongfang construction site. "
Lu Chuan then asked: "Have you conducted a survey of the on-duty personnel who resigned or were transferred from Dongfang Construction Site in the past two years?"
Touch platoon?
Qin Jun shook his head.
"After yesterday's announcement, we have been dealing with the on-site matters and have not reported further to the superior leaders. The director is also busy with the blockade, so..."
Okay, stop talking.
Lu Chuan knew that the current survey work here was somewhat inadequate, and he was obviously a step behind.
For such important information, you should first look at the situation and report it to your superiors as soon as you discover it.
If you wanted to go up and make a report after sorting out the video last night, then the investigation would probably have been completed by now, and the identity of the suspect has probably been determined.
For Qin Chuan, this time's on-site inspection was different from previous on-site inspections. The other party's entire person was exposed to surveillance, so ordinary fingerprints and footprints did not have a particularly big impact on Lu Chuan. For reference, it is useless for the other party to leave fingerprints while wearing gloves.
As for using footprints to judge the other person, the other person's height, weight, body shape and other related characteristics are already very clear based on the footprints. The comparison is not significant, and certainly not completely meaningless.
So the first thing Lu Chuan wanted to see was the relevant monitoring information.
After making a basic judgment, Lu Chuan immediately called Li Donglin. (End of chapter)