Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

Chapter 6 Clues brought by soot

The photo is of the ashtray on the coffee table, just to the left of the corpse, with two spots of ash in it.

But only ashes, no cigarette butts.

Lu Chuan had already read the autopsy report. The index and middle fingers of the deceased Zhang Wen's right index finger and middle fingertips were burnt yellow, and there were obvious traces of smoke. It was obvious that he had a history of smoking.

It is normal for a smoker to have ash in the ashtray on the coffee table.

The question is, there is soot, why no cigarette butts?
Lu Chuan looked pleasantly surprised, and continued to flip through the photos. A moment later, a photo of the trash can in front of the deceased's house appeared on the screen.

A piece of cigarette butt was impressively at the bottom of the trash can!
Zooming in on the photo, the trademark on the cigarette butt has been burned, and the end of the filter connected to the tobacco has been burnt.

Lu Chuan himself was a smoker, and it was clear that this happened after the smoker hadn't snuffed out the cigarette butt, which resulted in the natural burning of the cigarette butt.

Was this cigarette butt left by the deceased Zhang Wen?

Lu Chuan frowned, flipped through the photos next time, this time only flipped through a few photos, and a cigarette case appeared on the screen.

Every item on the coffee table was numbered and photographed by Lu Chuan.

Hongmei cigarettes, with a lighter next to the cigarette case, should be the cigarettes that Zhang Wen usually smokes.

This cigarette is not expensive. When Lu Chuan was in college, his classmates often bought this kind of cigarette, and Lu Chuan also smoked it.

So I am more familiar with this kind of cigarette.

It was because of familiarity that the problem was discovered.

The filters of Hongmei brand cigarettes are different from the filters of ordinary cigarettes in that they are distributed with light yellow spots.

However, there were no buff spots on the cigarette butt filters in the trash can.

In other words, there is a high probability that Zhang Wen has not smoked the cigarette butt that has been burned out and has no brand logo.

Zhang Wen didn't smoke it, who left it?
A flash of excitement flashed in Lu Chuan's eyes, could it be left by the murderer?

Turning around and looking at the sleeping Liu Guodong, Lu Chuan decided to wake him up. The cigarette butt was not collected as evidence, so now he needs to go to the scene for re-examination.

However, there are regulations for the re-survey. One person cannot enter the site alone. At least two people are required to conduct the re-survey, and a third person is also required to witness.

Of course, rules are dead, but people are alive. In most cases, the auxiliary police act as the third witness.

This is like an elderly middle-aged man, even if the prostate rebellion is unable to fight, he still uses his fingers after all.

Liu Guodong, who was awakened in a daze, was startled by Lu Chuan's green eyes.

"clue?"

Lu Chuan nodded excitedly, his blown hair looked like a messy chicken coop: "The cigarette Zhang Wen smokes is Hongmei, but the cigarette butts in the trash can are not from Hongmei cigarettes. I feel something is wrong."

After listening to Lu Chuan's explanation, Liu Guodong straightened up in an instant. After working for a day, he just couldn't keep up with his physical strength, which didn't mean he didn't have the intention.

"Go, go to the scene!"

"Do you want to report to Team Qin?"

"No, let's go to the scene and bring the things back first. After collecting the DNA information on it, let's talk about the evidence!"

Jiang is still old and spicy, so he doesn't do things he is not sure about.

When Liu Guodong and Lu Chuan left, no one was disturbed. The No. [-] conference room was still noisy, and Qin Yong's angry roar spread throughout the detachment building.

Of course, no one paid attention to the current survey at this time, and their task was basically completed.

The reason why Liu Guodong didn't go home was because he was embarrassed to leave Lu Chuan here alone.

On the other hand, the case was not solved after all, so he left directly, which was a disrespect and provocation to Captain Qin Yong.

How could the old Jianghu do such a thing.

Looking at Lu Chuan, who is full of energy and has green eyes, Liu Guodong seems to have returned to the time when he just joined the job 20 years ago.

"It's nice to be young..."

after an hour.

Next to the DNA detector, Liu Guodong just stared at Lu Chuan's hand operating the instrument: "How is it?"

call!
Lu Chuan took the comparison report and heaved a sigh of relief: "The DNA information on the cigarette butt has been determined not to be Zhang Wen's."

Dry!
Liu Guodong accepted the report excitedly, and slapped Lu Chuan on the shoulder: "Good job!"

"You kid has made meritorious service...huh?"

Liu Guodong's excited expression gradually solidified, and then turned into disbelief: "This DNA matching degree..."

Lu Chuan shook his head: "That's right, the DNA information on the cigarette butt is indeed not Zhang Wen's, but it has a parent-child relationship with him..."

"The cigarette butt was left by his son."

Grass!
Five twenty in the morning.

Twenty-six hours had passed since Zhang Wen's death. In meeting room No. 26, there was still no clue to the breakthrough of the case.

As the head of the Criminal Investigation Detachment, Qin Yong has come step by step from the first-line criminal police to today, and he has handled no less than [-] murder cases.

Although most of the cases have been solved, no one can guarantee that murder cases will be solved.

In the case of Zhang Wen's murder, so far, no valuable clues have been found.

Generally speaking, there is a golden 72-hour saying for solving a murder case, that is, within three days after the crime, the hope of solving the case is the greatest.

It's not that the case can't be solved after this time, it just takes more energy and time.

"Everyone, carry out a comprehensive survey of the vicinity of Zhang Wen's house, and every family must not be missed, and all visits and investigations are in place."

"The scope of monitoring and investigation should also be expanded. All the surveillance videos of all intersections and shops within one kilometer of Zhang Wen's home have been checked!"

In the absence of any clues, crowd tactics are the best weapon for criminal police to solve cases.

This is also one of the reasons for the golden 72 hours. Three days of fierce battle with crowd tactics is the limit of ordinary people.

boom!
The door of meeting room No. [-] was violently pushed open, and everyone's eyes were focused on the door.

If you dare to enter meeting room No. [-] at this time, everyone wants to see who it is.

Qin Yong's attention was also attracted, and he found that it was Liu Guodong, who was currently surveying the office, with a gloomy expression on his face.

Liu Guodong is a veteran, and joined the police at the same time as Qin Yong. Although he has no official position now, he leads the survey and can be regarded as the technical backbone of the detachment.

Qin Yong looked at the time, and it was almost six o'clock in the morning: "Old Liu, why haven't you gone back to rest? You have been busy with the survey during the day, you..."

Liu Guodong shook his head and directly interrupted Qin Yong's words: "Captain Qin, there are clues!"

There are clues!
Qin Yongteng jumped up from his seat, his tired eyes glowed fiercely and fiercely: "Did you find anything during the current survey?"

Liu Guodong nodded heavily, and handed Zhang Wen and the DNA information comparison report collected on the cigarette butts in the trash can to Qin Yong: "The cigarette butts in front of Zhang Wen's house do not belong to the deceased, but his son's!"

His son's?

Qin Yong's heart flashed with ecstasy!

Zhang Wen's son, Zhang Minlu, does not usually live with Zhang Wen.

Yesterday morning, Zhang Minlu went to pick up Zhang Wen for a physical examination, and reported to the police only after discovering that Zhang Wen was dead.

Since the two of them don't live together, how can there be cigarette butts that Zhang Minlu smoked in Zhang Wen's house?

Could it be that this guy smoked while reporting the crime after seeing his father die?

"Old Liu, if the case is solved, you will be the first to investigate!"

"One group and two groups, immediately follow me to Zhang Minlu's house!"

(End of this chapter)