Chapter 196 Second on-site survey

Da Zhao nodded.

"It is confirmed that the deceased is Tan Ran. This is part of the inspection report, and some of them have not been completed."

Zhou Ning took the report and looked carefully.

The blood spots found at the scene belonged to Tan Ran, blood footprints, blood fingerprints, blood drops, and pools of blood. These results were all revealed. As for the other DNA on the first scene, only Xing Xiaoli was collected. It seems that the murderer hopes that the police will lead the suspicion to Xing Xiaoli.

However, after looking through it, the inspection report of the hand saw, kitchen knife and wire did not come out, which surprised Zhou Ning.

"Sister Cui didn't say why she didn't finish the test?"

"I said that although these physical evidences contain blood stains of the dead, the components of 84 disinfectant were found on several items, and there were all in the gaps. Sister Cui said that these items may have been sprayed with 84 disinfectant before they were used.

She wanted to try it out to see if DNA fragments can be extracted. After all, although most people know that 84 can destroy DNA when watching criminal investigation dramas, Sister Cui said that it is just oxidative damage of free radicals. Although it cannot be restored, the fragments inside can be extracted."

Zhou Ning nodded.

"If you just spray it, you will be a hooligan. Even if you are soaked in the disinfectant, if you are oil blocking the liquid, you can find the residue inside.

Of course, as Sister Cui said, even if it is destroyed, some DNA fragments can be obtained. However, this requires a lot of collection and extraction, and the workload is very large, and it also requires a little luck. Let's see if Xu Da is so lucky."

"What are you talking about me?"

With the sound, Xu Dayuan pushed the door and his eyes were a little congested, but his mental state was in good spirits. It seemed that he had noticed it.

Da Zhao grinned.

"How dare we talk about you behind the scenes? Sister Cui said that we should take a look at our luck. We want to extract it a few more times to see if we can find something else. After all, these things were sprayed with disinfectant before using them. Isn't this just to remove the remaining things on it?"

Xu Dayuan was a little bit different. After all, these people were so serious that he was still moved.

"I'll call Section Chief Cui later and thank her."

"You're just red mouth and white teeth? You don't know anything about it."

Seeing Xu Dayuan glaring, Zhou Ning quickly said:

"The surveillance is here?"

Xu Dayuan snorted at Da Zhao twice before looking at Zhou Ning.

"I got the video last night and sent it to Xiaoqu. The surveillance was very unclear. Several people from the technical department were busy with Xiaoqu all night. Let's go and have a look."

The three of them went upstairs together.

In the laboratory, Xia Momo was so smoky that she was wearing a mask and coughing. Da Zhao quickly went in and opened the window, kicking the two people from the technical department and Xiao Zeng.

"Why are you so worried? Teacher Xia is here, you guys can't rest if you have a few big bluffs. You want to pull them out and smoke. The room is like making alchemy. Don't come to the laboratory in the future."

After a pause, Zhou Ning and Xu Dayuan did not stop it. Zhou Ning was really dissatisfied. The first priority of the laboratory was to test the software application, and the second was to assist Zhou Ning and others in the investigation of the case. None of them was from the bureau. Helping him would be polite and he couldn't come over like the old man.

Xu Dayuan coughed and looked at Xiao Zeng. Xiao Zeng was embarrassed and jumped over.

"The boss is here. The surveillance of September 6, 7 and 8 has been repaired here. We are looking for people one by one."

Da Zhao grinned, came over and hit Xiao Zeng's shoulder.

"Stop fooling your boss, and look for it one by one. Xiaoqu has experience. This software can screen surveillance videos, then analyze all personnel, and finally need to manually compare time and characters."

Xiao Zeng scratched his head, and Xu Dayuan pushed him away.

"On Tan Ran's mobile phone, the last call record was at 12:34 on September 7, which was the introduction of the mobile company's package. We have already checked this and found the call recording. We have confirmed that it was answered by myself.

So the focus of the investigation is on the 7th and 8th. Did you find out who went out with her suitcase? Also, at what time did she leave on September 6th?"

Xiao Zeng was a little stuck in this question and looked at Xiao Qu like he asked for help.

"I just found it, I have taken a screenshot and saved it. Tan Ran left on the afternoon of September 6th and carried a small suitcase."

As he said that, Xiaoqu had found a clipped video and clicked to play.

The marked time above is 15:41. Tan Ran pulled a red suitcase, came out of the unit door, wore a red baseball cap, and called while walking.

Xiaoqu then opened more than ten pictures on another display screen, all of which were surveillance screenshots, and almost everyone in them had a suitcase.

"These are all the people who came out with their suitcases from September 7 to September 8."

Several people climbed over the screen. Xu Dayuan looked at it and frowned.

“Don’t have the same gray suitcase?”

Zhou Ning stared at the screen. The suitcases these people carried were not small inches, but it seemed unlikely to put the 29-inch suitcase inside.

"Is there Xing Xiaoli in it?"

Without Xiaoqu to identify, Xu Dayuan pointed at someone and said:

"This is Xing Xiaoli, he took two suitcases away."

Zhou Ning leaned closer and looked at it. Although the picture was not clear, he could still feel Xing Xiaoli's thinness. Indeed, he was of this height and wanted to be a male athlete with double skating. Similarly, his figure was a bit difficult to transport the corpse.

"Building 4, Enbo Community, can you see this surveillance camera?"

"You can see this. The east side is the wall, so you can go out of the community directly. Moreover, the unit doors are on the north side. You can't throw the box out of the window, there is a person inside."

After saying this, Xu Dayuan was also stunned. Then he took out his cell phone and found a satellite picture of the street. The east side of Building 4 was adjacent to a small road, which was close to a hotel. The hotel was quite high and formed a narrow passage here, and the narrow road could be used on both sides.

"It seems that transporting it out of the window is a good way. I don't know if there is any surveillance behind the hotel."

After saying that, he looked back at Xiao Zeng, who quickly nodded.

"I'll go now."

Xu Dayuan thought about waving his hand.

"Go together, Zhou Xiaozhou, you will take people to investigate the first scene for the second time. Let's take people around to check whether there is a surveillance to get this location, and find vehicles entering and leaving both ends of the road. After all, the best way to transport the bodies is to transfer the vehicles."

Half an hour later.

Zhou Ning and the others have arrived at Building 4 of Enbo Community. The car has just gone around the path outside. Sure enough, the fence on the east side is close to the edge of Building 4, while the south side is not a wall, but an iron fence, and the window is five or six meters away from this fence.

Several people went upstairs, and at the door of 202, a policeman stood here. When he saw Zhou Ning and the others coming up, he nodded quickly.

"Doctor Zhou, you are here!"

Zhou Ning nodded with a smile.

"Yesterday, Wang Ying didn't come back to live, did he?"

"The leader said that everyone is required to live in temporary rooms in the gymnasium and are not allowed to leave."

This answer is quite satisfactory. After all, throwing the box out of the window is impossible in Xing Xiaoli's room. You can only throw it out from the window in the bathroom on the east side. Of course, it can also be 301, 401, 501. Except for 101 without the east window, all of these can be done.

However, if you throw these floors down, it will be easier to attract others' attention.

Thinking that the feet didn't stop, several people had already entered the middle of 201 directly.

"Da Zhao checked the bathroom, and Yang Xuetong went to check the two bedrooms, pay attention to checking the blood and fingerprints. Forget the shoe prints on the floor, just check if there are any signs of pulling the suitcase."

Yang Xuetong took things to the master bedroom. Da Zhao opened the bathroom door. The layout here is exactly the opposite of 202. The window is not big, and the width is completely open at 65 cm.

Da Zhao approached and pressed the screen window down after measuring. Then with a click, the screen window rolled up.

As the screen rolled up, a wave of dust flew away. Da Zhao poked his head out of the window. Two dirty scratches outside the window were very obvious. It was so dark that it was not obvious what it was. Zhou Ning handed him a wet cotton swab, Da Zhao wiped it for a while, and then threw it into the reagent bottle, which instantly turned pink.

"Bloody!"

"Well, it's blood, take a sample!"

This discovery, like a cardiotropic agent, took the sample excitedly, then poked out his body and observed it left and right. On the outside of the window, he found a fingerprint, but this fingerprint was not a fingertip. After collecting it, Da Zhao raised it to Zhou Ning to show it.

"This comparison is difficult. I don't see any traces left by my fingertips."

Sure enough, there was a round fingertip mark in the middle of the fingerprints of the two wire gloves. It was obvious that the wire glove was broken during the process of transporting the box, and the murderer did not pay attention to leaving this mark.

"It can be compared. If there are no special features, the probability of similar patterns in this position is very high and cannot be used as main evidence."

Da Zhao sighed. He always had a good attitude, and Zhou Ning's words could not touch him.

"Don't worry, it's good to find clues, this is progress."

Zhou Ning nodded, and Yang Xuetong came over.

"Team leader, there is a lot of fingerprint information in these two rooms. I have collected it. However, except for the fluorescence reaction on the door lock handle when entering the door, no blood was found elsewhere."

Zhou Ning nodded again.

"The murderer can accurately know everyone's schedule, enter and exit this unit at will, and even have the keys of 201 and 202, right-handed, has certain anti-spot ability, and is powerful, and is an adult male."

Da Zhao said from the side:

"When Wang Ligang and the others were asked to understand the situation, he answered the phone and opened the door with his right hand. This was a subconscious action and could not be deliberately changed. According to your image, is he also a person who doubted it?"
Chapter completed!