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

Lu Chuan had carefully checked the office door lock.

Confirm that there are no traces of being opened by violence.

There are a total of 7 keys in this office, including one for each of Director Chen and the four doctors, and the other key is in Director Chen's office.

In addition, the hospital's Public Security Department also has a spare key.

However, this is only the current number of keys, because doctors in the health department have been transferred in and out, and other people also have keys. After they were handed back, they were never assigned keys again. This cannot be determined now.

Zhang Hui has already inquired about the doctors of the health department, Yihui, and conducted a more detailed investigation.

So far, the five people have not been found to have committed theft.

Several doctors and Director Chen left respectively, and Lu Chuan started walking around in the office.

The office area is not large, less than 100 square meters.

After entering the door, there are file cabinets on the left and the office area on the right.

Lu Chuan had never thought about conventional spot-exploring techniques such as fingerprints and footprints.

There is definitely no gain.

If Director Chen and the other five personnel did not insist on committing self-stealing.

So, what Lu Chuan has to do now is to find out how the suspect entered the office.

There are no windows on the office corridor side, just walls.

The only way to enter the office is through the door.

However, there were high-definition surveillance cameras in the corridor, and no strangers entered from that night until the next morning.

There is cleaning and sanitation in between, but it's just mopping the floor.

Zhang Hui also investigated the cleaning staff. An aunt who has been doing cleaning in the hospital has been working in the hospital for seven or eight years.

There are two windows on the sunny side, but steel bars have long been installed.

Although it is on the second floor, there is no possibility of entering through the window.

Yang Sen carefully inspected these windows at that time. There was no problem with the anti-theft steel bars, and there were no signs of climbing on the windows.

I looked at it carefully even without wearing it. There was nothing wrong with the on-site inspection conducted by Yang Sen. There were indeed no traces left on the windows.

And while waiting to get off work this afternoon, Lu Chuan also took a walk outside at the bottom of the building.

There were no traces of trampling on the lawn adjacent to the health department office.

No one had been under the window for a short period of time.

So, how did the other party get in?
Doors and windows are in good condition.

It seems that there is no other more reasonable explanation except that the doctors in the health department are committing theft.

However, maternal and child health doctors are well paid.

Although 78 birth certificates can be sold for a lot of money, are the five doctors in the health department worth gambling for their entire lives?

It doesn't make sense logically.

Doctors in the health department know better than anyone what responsibilities they have to bear if there is something wrong with the birth certificate.

It's not as simple as losing money or handing over things.

That's going to jail.

Doctors in the health department all have professional establishments. For this little money...

Makes no sense.

Of course, it would be okay if one person committed the crime, but five people committed the crime together...

Unlikely.

"Kawako, do you know how I came here this week?"

Zhang Hui followed Lu Chuan: "I can't even figure out how the thief did it!"

How did you do it?
There must be a way.

Since you can’t get in through the window, you can’t get in through the door either…

Then it can only be in the sky or on the ground.

Nothing is possible on earth.

They were all floor tiles, and Lu Chuan had just stepped on them.

Then it can only be up there.

"Brother Hui, has the ceiling been removed?"

ceiling?
Zhang Hui raised his head and looked at the white ceiling above his head: "You didn't look at this, did you?"

"It's just a suspended ceiling with a floor above it..." Zhang Hui didn't think about it at all.

"Brother Hui, bring a stool over here and let's take a look."

There is no other way now.

The windows were equipped with anti-theft steel bars and showed no signs of vandalism.

There is high-definition surveillance at the office door, and there is no possibility of tampering with the surveillance video.

There are floor tiles on the ground, so you can only look at the top.

Zhang Hui moved a chair over, and Lu Chuan climbed on it, just enough to touch the ceiling.

Opening a partition from the corner, Lu Chuan poked his head in, just in time to see what was going on inside.

At this point, it doesn't matter.

"Brother Hui, I made a discovery!"

An hour later, with the joint efforts of more than a dozen criminal police officers, half of the ceiling was torn down.

"It's been cut here."

Above everyone's heads is a ventilation duct close to the wall.

The hospital's property manager was also called over.

"This is the exhaust system that the hospital installed uniformly in the past few years."

"Every office has one."

The ducts of this exhaust system are very thick, and the air outlet in the health department office is in the center of the office.

But there was an obvious big hole on the side near the wall.

"The other party...climbed in from here?"

Zhang Hui did not expect that the thief would really fall from the sky.

Lu Chuan has already started to conduct on-site exploration at the place where the pipeline has been cut.

There are quite a few fingerprints on it.

"After collecting it, let's check along the pipeline."

Of course, there is no need for people to go directly into the pipe.

The criminal investigation detachment first looked at the office where there is an investigation robot and put it directly in. They will know after walking around inside.

Lu Chuan had just called Yang Sen, and the other party and Yang Lin were driving over.

Lu Chuan's work here was quickly over.

The other party had left fingerprints on the edge of the ventilation duct.

When Yang Sen came over, Lu Chuan had already completed the survey.

All that's left is to follow the pipe to where the thieves first entered.

Soon, the location was finally locked in the women’s restroom on the same floor!

In the toilet, Lu Chuan also found a cut passage at the entrance.

Now, although the thief's method of entering the office has been found, the case has not been solved yet.

Was it done by insiders or outsiders? There's no way to know for sure now.

The surveillance cameras in the corridor can see the entrances of each office, but the bathroom is hidden in the corner.

"I'll go back and do fingerprint identification analysis first to see if I can lock the other party's identity."

"Okay, I'll visit and investigate here to see if I can get any clues."

The two separated.

Zhang Hui also reported to Qin Yong in time.

Although the case has not been solved yet, at least there are important clues.

Now the main thing is to see whether Lu Chuan's fingerprint identification results can match the opponent's.

If you can compare, that would be the best.

But if there really is no match, there is nothing the police can do.

Although the other party was not exposed to the surveillance in the corridor, the other party must leave the hospital after coming out of the toilet on the day of the crime.

The worst case scenario is to conduct an investigation on all the surveillance from the day before and the day after the incident.

Search one by one, and also find the other party. (End of chapter)