1995, Starting as a Criminal Investigation Expert

The cordon was expanded again, and the large group of people who had arrived at the scene dispersed to visit witnesses and find out what was going on.

Xu Qiang, Xiao Rui, and Wang Benyi huddled together, spread out a map, and discussed the suspect's escape route and the pursuit.

At this moment, Zhao Yong nudged Li Shu, signaling the two of them to look carefully.

I brought Li Shu and the other person here not expecting them to be of any help, but just to familiarize them with the entire on-site investigation process.

Schools teach this, but it's ultimately just theoretical and quite different from real-world work.

Therefore, you should read and learn more.

While watching, Zhao Yong asked questions, such as what the first step should be.

Tan Guoxiong was clearly also drawn to the shocking scene, staring intently for a moment before saying, "Take a picture of the whole scene, draw a sketch, and make a record."

Li Shu nodded in agreement.

The principles of on-site investigation are "static before dynamic, bottom before top, key points before general, fixed before extraction".

The so-called "quiet" step is to first confirm the overall situation of the scene.

Which side is the central site, which side is the periphery, and which side is the related site?

After confirming the scene, take photos of the entire scene while preserving its original state.

The scene was recorded in its entirety through photographs or video recordings.

The surrounding environment also needs to be recorded.

The second step, as Tan Guoxiong mentioned, is to draw a site sketch.

First, sketch out the location of the car, the location where the person fell, where the suspect came from, and where the shooting took place. Then, once you enter the scene, you will need to take detailed measurements.

In other words, this step of being still means recording the overall situation on the ground from the outside.

And this is exactly what Han Jianjun and Li Mingsheng are doing now.

Li Mingsheng had been at the scene for an hour, assisting the ambulance in taking away the injured and arranging for people to go to the hospital.

If it weren't for waiting for Han Jianjun, a detailed on-site investigation would have already begun.

He had already drawn a sketch of the site and was discussing it with Han Jianjun.

He turned his head and pointed to the area diagonally opposite the credit union.

There is a related scene.

Witnesses saw the suspect emerge from the alleyway diagonally opposite.

"The two of them should have been waiting here beforehand. Once the escort vehicle came to a stop, one of them crossed the road, came up, and shot the escort who came down from the left, killing him."

Li Mingsheng led Han Jianjun and others outside the cordon to familiarize themselves with the situation.

He walked back and pointed to the right side of the jeep, which is to the south, saying, "Then we went around behind the car and caught up with the cashier who was running to the bank."

Standing outside the cordon on the pedestrian walkway, Li Shu saw it.

There is a pedestrian walkway on East Street. The jeep is parked on the side of the road. From where you get out of the passenger seat to the steps of the bank's main entrance, there is a distance of about four or five meters.

The man lay about two meters away from the jeep, his legs crossed, his upper body on the ground, and a large pool of blood beneath him.

The person was wearing a light blue short-sleeved shirt, the kind commonly seen on bank employees, with two clearly visible scattered impact points on the back.

That means he was shot twice.

Li Mingsheng pointed at the body and continued, "I speculate that he heard the gunshot, turned around to run, and the suspect chased after him and shot him in the back."

"The man fell to the ground, the money box in his hand was thrown away, the suspect quickly came up and fired a shot, and then went to pick up the money box."

"At that moment, the credit union staff came out to hand over the case. The person walking in front was the third victim, the manager of their credit union. He must have just come out and bumped into the suspect."

"The suspect fired directly, hitting him in the chest."

Below the bank steps lay a male corpse lying face up, his shirt completely soaked in blood, his head tilted to the side, motionless.

Behind him, on the steps, there was still blood.

Li Mingsheng stopped there and said, "Behind the manager was a female cashier and a security guard from the credit union. The suspect picked up the money box and fired two more shots at them. The security guard was shot in the abdomen, but the female cashier was lucky and wasn't hit."

"Then the suspect turned around and fired two shots at the other guard in the passenger seat, who hadn't gotten out of the car yet."

The front of the jeep was not visible from outside the cordon.

I didn't see the escort officer either.

"The driver was shot in the back shoulder and has been taken to the hospital," Li Mingsheng continued. "Up to this point, the suspect has fired a total of eight shots. Old Han, I think it was a Type 54 pistol."

Han Jianjun remained silent, gesturing for Li Mingsheng to continue.

Li Mingsheng pointed ahead of the jeep and said, "Another suspect came out on a motorcycle, picked up the suspect who fired the shot, and headed east. The whole process was very quick and extremely ruthless. It probably took less than two minutes. Many people nearby didn't even have time to react."

Li Shu followed nearby, listening with a pounding heart.

Three dead and two injured.

Moreover, thinking about the whole process, just as Li Mingsheng said, the suspect was ruthless and the process was clean and efficient.

One person takes action, while another provides backup; they kill, rob, and then immediately flee.

Absolutely ruthless.

That concludes the briefing.

Han Jianjun was also aware of the situation at the New Taipei Precinct. Like the Tingyang City Precinct, the technical squadron had very few people.

Otherwise, after the case was reported, Xu Qiang would not have requested that the on-site investigation be handed over to the Municipal Bureau.

Han Jianjun had worked for many years and was very experienced. To be honest, he had seen even more serious situations before. He showed no panic on his face. He first told Li Mingsheng to act together and follow his command.

"Old Li, you take your men and work with Old Wei and the others to take photos and survey the site. Old Qin, you're in charge of the body, and also arrange for someone to go to the hospital."

Old Wei is the head of the photography group.

Old Qin, on the other hand, is the team's chief forensic doctor.

If you go to the hospital, you need to examine the injured person, collect evidence such as their clothing, and also the bullet. After the surgery, you must carefully remove it to avoid scratching the rifling.

The bullets need to be inspected later, which is very important.

"Zhao Yong, the gun is crucial. Eight shots, eight shell casings. I won't forgive you if even one is missing. Also, the footprints and motorcycle tracks. You need to arrange for people to work with the criminal police at the branch office to find them along the suspect's escape route. These tire tracks are very important."

When on-site investigation, the trace evidence team is the most important team and is responsible for the most tasks.

As the team leader, Zhao Yong was highly experienced and naturally took on this task.

Speaking of bullet casings, Li Mingsheng turned and waved to one of his men not far away. After arriving at the scene, the man quickly picked up three conspicuous bullet casings.

"Old Han, look, it's bottle-shaped."

Li Mingsheng's earlier judgment that it was a Type 54 pistol was not only because the Type 54 pistol was common and had an eight-round magazine, but also because of the cartridge case.

The Type 54 pistol uses 7.62×25mm Tokarev pistol cartridges.

This pistol cartridge, unlike other pistol cartridges such as the Type 64 pistol cartridge, has a very distinctive feature: its bottle-shaped cartridge case.

Those familiar with the gun can tell what kind of gun it came from just by looking at the shell casing.

Han Jianjun took the magazine and, through the evidence bag, immediately checked the markings on the bottom of the cartridge case.

On the bottom of the cartridge case, around the primer, there are several worn-down, relatively blurry numbers.

There were originally five, but now one of them has been worn down by half.

The part that was worn away in the first 311 is the 1 at the end.

The number following that is 85.

Upon seeing this number, Han Jianjun felt a chill run down his spine.

It took him a full three seconds to react, and he immediately shouted "Xu Qiang!" at the top of his lungs towards the distance.

On the 25th, in a burglary case in the High-tech Zone, the suspect fired three shots, and three shell casings were recovered at the scene.

It is also the Type 54 pistol cartridge.

Meanwhile, through inspection, it can be basically confirmed that this is a homemade reloaded bullet.

In recent years, firearms have been rampant among civilians.

Many places illegally manufacture handguns, with the Type 54 being the most prominent and rampant example.

At the same time, having a gun isn't enough; you also need bullets.

Bullets may leak out through official channels, but the quantity is limited.

Most of them are still homemade.

A large portion of these are reloaded ammunition.

Recycle old cartridge cases and reload them.

These cartridge cases will still retain the markings from the bottom of the old cartridge cases.

In the burglary case, the bottom of the three bullet casings was marked 311-85.

State-owned Factory 311, produced in 85.

Therefore, the presence of the same bullet casing here can only mean that these two suspects are the suspects in a series of burglaries in the High-tech Zone.

These two guys were quiet for more than a week before they resurfaced and pulled off a big heist right away.