The sky has just darkened.

In the video, a figure emerged from the trees.

Came to the kitchen of Zhao Dezhi's home and found the location of the natural gas water heater's smoke vent.

The video is blurry and I can't see exactly what was done.

It only lasted about twenty seconds before he left.

At 10:02, another dark shadow appeared.

I only stayed at the smoke exhaust hole for about ten seconds before leaving again.

"The physical characteristics of the two figures are basically the same."

Liyang paused the video: "This person doesn't know what he did at the exhaust hole of the natural gas water heater in Zhao Dezhi's home."

"However, combined with the carbon monoxide poisoning of four people, Zhao Dezhi, it is basically certain that the other party is the murderer of this case!"

This time, whether it was Chen Yan, Huang Guojun, or even Qin Chuan.

All very excited!

This video discovered by Liyang is very important.

It can be said that the murderer was directly identified.

However, the picture on the video is very blurry, and due to the distance, only the outline of the figure can be clearly seen.

Even the basic movements of his hands cannot be seen clearly.

Not to mention looks.

"Is there any way to restore the murderer's appearance through some technology?"

Qin Chuan spoke for the first time at the meeting.

"Report to the leader," Liyang shook his head: "This is more difficult."

"After discovering the important content in the video, we immediately invited personnel from the technical department."

"But they don't have any good solutions."

Chen Yan nodded and explained to Qin Chuan: "There are two reasons why the video is blurry."

"One reason is that the video cameras themselves don't have high pixels."

"This is easy to solve. By eliminating noise, it is possible to restore a relatively clear picture."

"However, another reason is that the sky was too dark at the time. The blur caused by the light made it difficult to extract a relatively clear image."

Qin Chuan nodded.

This is easy to understand.

No matter how good the camera is, no matter how high the pixels are, it is useless without light.

"Then we will do our best to investigate the surrounding surveillance, use the Sky Eye system, compare the suspect's figure, and see if we can gain anything!"

"yes!"

Liyang took the order and left.

Of course, this possibility is relatively small.

The community where Zhao Dezhi lives is an old open community.

There are doors everywhere, and anyone from anywhere can enter.

Therefore, it is unlikely to identify the suspect through this aspect.

"Although it has been determined that the suspect used manipulation to poison Zhao Dezhi and the four others." Huang Guojun clicked on the video playback.

"But, what exactly did the other party do?"

Chen Yan said they had already inspected the smoke vent of Zhao Dezhi's natural gas water heater.

There are no traces of damage.

However, the other party only took two or three breaths to fix the water heater.

So that the exhaust gas cannot be eliminated.

How did he do that?

Directly blocked?

impossible!

If it is directly blocked and air cannot enter, the water heater will automatically shut down.

This is a protection device that all natural gas water heaters have.

Chen Yan frowned.

How did the other party do it?

The smoke vent of the water heater was inspected by Chen Yan personally.

No damage.

brush!

In my mind, I replayed every detail of the water heater's smoke vent.

Zhao Dezhi's water heater has been in use for several years.

There are some oil stains on it.

If it is completely blocked, it will inevitably cause oil stains and scratches.

But, no.

The one-way locked iron plate opens and closes normally.

surface……

etc!

surface!

Wow!

The picture of the one-way locked iron piece instantly enlarged in Chen Yan's mind.

Every detail was presented before Chen Yan's eyes.

ha!
Chapter completed!