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

Chapter 82

The next morning, eight o'clock.

It was bright, and Lu Chuan, who had slept for four or five hours, hadn't recovered completely, but he could continue to endure.

After analyzing the footprints found in the ravine overnight last night, the four sets of tire marks on the roadside were just appetizers.

The highlight is today, the on-site inspection of the burning vehicles.

There are many ways to destroy the scene, water bubbles, soil burial, etc. are common methods in murder cases.

For example, corpses are sunk in reservoirs, and corpses are buried under highways.

Among all the methods of destroying criminal evidence, burning can be said to be the most thorough in cleaning up traces.

In general field surveys, the most annoying thing is to encounter a fire scene.

For example, in the last arson case in the southern suburbs, it was impossible to extract fingerprints at the scene of the fire without some special means.

A ravine near Xinjian Village.

Last night, police officers from two nearby police stations guarded the place all night.

When Lu Chuan and others came, the two policemen were nestled in the police car on the side of the road.

In terms of being a human being, you have to be Lao Bai.

It is true that people are mature and refined. When Lu Chuan was bringing buns in the cafeteria just now, Lu Chuan thought that the other party was not full.

"Brother, here are some buns."

The policeman at the police station who guarded the scene was an auxiliary policeman, and was flattered to receive Lao Bai's steamed stuffed bun.

Thank you again and again.

Lu Chuan returned to the Xiankan professional car and took out two packs of Zhonghua cigarettes from the buckle: "You two have worked hard."

As a freshman of the current survey, Lu Chuan put a lot of good cigarettes in any place and car belonging to the current survey office.

Liu Guodong and the others are embarrassed to smoke his cigarettes all the time, so that's all he can do.

You can pick it up with your hand, and many of them are still opened, and they are dry without smoking shredded tobacco.

When the other party saw Hua Zi in Lu Chuan's hand, surprise flashed in his eyes. A criminal policeman is more promising than an ordinary policeman.

The director of their police station doesn't necessarily draw Huazi every day.

"Officer Lu, we can smoke this."

The tall auxiliary policeman had seen Lu Chuan at the scene yesterday, and knew that he was the current investigation criminal policeman of the criminal investigation detachment. He took out his red plum, and the auxiliary policeman waved his hand.

"You're welcome, squatting all night, it's hard work."

After speaking, he threw the cigarette into the police car and went straight down the ravine.

With Baozi and Huazi, the stomachs of the two auxiliary policemen are full and their energy is full.

Follow Lu Chuan and the others into the ravine.

Liu Guodong stood in front of the off-road vehicle, looked at it carefully, and sighed after a while.

"Do your best to obey the destiny and work hard!"

Lu Chuan opened the survey box he carried with him, put on three layers of gloves, and focused on observing the situation in the driver's seat.

Fingerprints on the steering wheel...forget it.

The rubber has been burnt, not to mention Lu Chuan's intermediate fingerprint collection skills, even advanced ones.

The carrier is gone, and fingerprints can still be collected, which is a fantasy.

But when you drive, you don't just leave fingerprints on the steering wheel.

Fingerprints may be left on gear handles, handbrakes, door handles, etc.

Lu Chuan mainly observed some metal parts that were not burned.

These places are smoky and black.

It is very difficult to collect fingerprints.

Liu Guodong and the others knew that Lu Chuan had a hand in collecting over-the-top fingerprints, so they handed over the job to him.

The three are investigating the front of the car.

"There is still blood left in this part, collect it."

The vehicle burned and exploded, but did not destroy all evidence.

The marks of the bumper impact are still there, and there are spots of dried blood in the gaps.

When the murderer burned the vehicle, he sprayed gasoline inside and outside, which made the vehicle burn more fully.

The interior has been completely changed, completely melted, and the seats are only supported by iron frames.

All the headlights are melted, and the plastic parts are basically not intact.

Fortunately, the burning of the vehicle was not caused by the impact, so the engine part was only overheated, and the rubber sleeves were burned off, but it was not completely damaged.

"Xiao Lu, how is the inspection going?"

Lu Chuan, who leaned halfway into the carriage, sighed: "The interior inside is completely destroyed."

"The car paint is all burnt out, and there is basically no possibility of fingerprints being extracted from the door handle and the surface of the car."

"I found some curled plastic debris under the dashboard, to see if I could find fingerprints from the inside."

The damage to the vehicle was worse than expected.

Fortunately, Li Kai and the others didn't use a fire extinguisher when they found out yesterday, otherwise, there is no need to look at anything.

There are only two gains from the vehicle survey.

Suspected blood-stained residue was found in the gap after the front bumper was smashed.

There is a high probability that it is the trace left by Song Kun when he was hit, and because it is hidden in the gap of the vehicle frame, although it has been dried up by the high temperature, it can still be collected.

There is also a curly interior panel that Lu Chuan found, and it can no longer be seen where it once belonged from the appearance.

But the inside after curling may be relatively intact.

Take it back and process it. If you are lucky, you can collect fingerprints.

After the survey of the vehicle was over, Liu Guodong called the traffic police to tow the car away.

This kind of vehicle involved in the murder case will be sealed in the special parking lot of the traffic police detachment.

When the case is solved, when will the next step be processed.

Current survey laboratory.

Liu Guodong is processing the collected blood.

"DNA information identification is impossible, but blood type can be determined."

Lu Chuan nodded. The detection of blood type is judged by the singleness of the red blood cell surface antigen.

This antigen is essentially a protein. Although high temperature will damage the protein structure, the chemical reaction will not disappear.

In the end, the blood type test result was consistent with Song Kun's A blood type, which could prove from the side that the burned vehicle was indeed the one that hit Song Kun.

Of course, this is only one piece of evidence, and the debris scattered at the impact site can also be used as evidence.

The blood test has made some progress, but Lu Chuan's fingerprint collection is very difficult.

Although the fragments of the interior panels have been processed and the inner layer has been opened, Lu Chuan's luck is a little bit worse this time.

The killer left no fingerprints on the interior.

It can be said that the way the murderer set fire to the car to eliminate his traces was very successful.

Solving a case depends on both technology and sometimes luck.

During Liang Qi's kidnapping case, Lu Chuan was very lucky, and met the suspect during his follow-up.

Of course, it can also be said to be very bad, because he met the suspect alone and his identity was discovered.

A week passed quickly.

The atmosphere in the criminal investigation detachment is very depressing, everyone is staring at the black eye, chicken nest.

Qin Yong even slept directly in the office for seven days and never went home for a day.

Ren Qiang, Sun Jun and other criminal police officers in the action team never came back to the office a few times, let alone going home.

Everyone rushed to the scene.

However, just like Lu Chuan, the luck of solving the case this time was a little bit worse.

Song Kun's murder case has not made any substantial progress so far.

All the clues are still only two.

(End of this chapter)