Inspector Yumio's speculation is not unreasonable. After all, the arsonist's method was to use a stove to set fire.

Although the heater catches fire in an instant, making it impossible for unprepared people to extinguish it, that's all it is and it won't cause a secondary explosion or other violent combustion environment.

In other words, even if human power is unable to extinguish the fire, it is still possible to escape directly. This is also the reason why there were no casualties in the previous times.

So the situation this time is very intriguing. Because the deceased is dead, one cannot help but wonder whether arson was deliberately carried out to kill people.

"Vengeance..."

Inspector Megure pondered after hearing this and said, "It seems that we need to conduct a key investigation of the customers and employees of the company "El Electric" to see if anyone has a grudge against Koyanagizu Kiriko."

"The previous direction of investigation cannot be completely abandoned."

Tang Ze made a brief psychological profile of the arson suspect and continued, "In addition to customers and employees, those who didn't become employees should also be investigated. Compared to the previous two categories, this type of person may be more likely to have a motive."

"Hmm...that does make sense. Let's proceed with both lines simultaneously!"

Officer Megure pondered for a moment and nodded, then looked at Inspector Yumignaga: "You were responsible for investigating the previous companies, and I'll trouble you to continue the investigation.

We are mainly investigating the interpersonal relationships of the deceased, Kiriko Koyanagi. After all, the situation is still unclear and all possibilities exist."

After briefly assigning the subsequent investigation direction, Tang Ze once again focused his attention on the fire extinguisher.

"Detective Tang Ze, I just noticed you were looking at the fire extinguisher. Did you notice anything strange?"

Naoki Kamii, who was quietly listening to the speculations of several people, noticed Tang Ze's actions and couldn't help but ask.

After all, based on his understanding of Detective Tang Ze, there must be a reason why the other party cares so much about the fire extinguisher.

"Well, at first glance I just thought it was a little strange, but now I've discovered the problem."

Tang Ze nodded and walked closer to the charred fire extinguisher, pointing to the hose of the fire extinguisher hanging on the ground: "Normally, when the fire extinguisher is stored, the hose is fixed, right?

But the fire extinguisher next to the heater not only had the hose removed, but the safety fan had also been opened.

Do you think that if there is a fire extinguisher like this placed next to the fireplace, you would pick it up in a hurry?

It's come to this, and there's not even a speck of dry powder from a fire extinguisher in the room. Isn't that a bit unusual?"

"Ah, indeed..."

After hearing Tang Ze point out that something was wrong, the group realized what the problem was.

"If someone panicked and grabbed a fire extinguisher after a fire broke out, it would be normal to hold onto the extinguisher even if they were burned to death."

Inspector Yumio of the Fire Department made this judgment based on his own experience, "After all, people want to grasp at the last straw before they die.

Regardless of whether the fire extinguisher was useful for the food at the time, it would not have been thrown aside by the deceased.

"That means this fire extinguisher was prepared before the fire broke out?" Takagi subconsciously made a deduction after hearing the two people's reasoning.

"Yeah, it's like they knew in advance that there would be a fire."

Tang Ze's eyes flashed with a glint: "I clearly knew there might be a fire and even made preparations, but I was burned to death...

No, was she really burned to death?"

"It's so confusing. Is there a simple murder or arson covering this up..."

After hearing Tang Ze's reasoning, Inspector Megure felt a little headache and said, "How about I leave the investigation in this direction to you, Detective Tang Ze?

We are working on three fronts simultaneously to solve the case quickly. Many people are expressing dissatisfaction and feel their safety is not guaranteed."

Come to think of it, four crimes were committed in just two days, and tonight's case even resulted in murder. It's easy to imagine how dissatisfied the public will be when the media broadcasts this news.

Dividing the troops into three groups and starting the investigation in three directions was a helpless move. After all, each direction may lead to the truth, and they cannot give up any possibility now that they are racing against time.

But there was no point in being anxious. After saying goodbye to Inspector Megure and Inspector Yuminaga, Karasawa did return home and rest directly.

There was no way. There were a large number of people who needed to be investigated in the areas they were responsible for, and Tang Ze treated the case as an ordinary murder case.

But it was already very late, and he had no way to start the investigation. He also needed a demonstration report to preliminarily determine whether his speculation was necessary to proceed.

The next morning, Tang Ze received the autopsy report from his subordinates, which was completed by Asami Miura after working overtime overnight.

According to the autopsy results, the cause of death of Kiriko Koyanagi was suffocation.

However, because the damage to the body was quite serious this time, with the head, neck and half of the body burning in the eyes, it was impossible to determine whether the person was suffocated by the smoke from the burning.

After seeing this message, Tang Ze felt that his judgment seemed to be correct. The other party might have really been killed, and the criminal set the fire in order to destroy the scar on his neck and frame the serial arsonist.

It's not just because of the autopsy report, but also because of the location where Koyanagizu Kiriko fell.

Generally speaking, when a fire occurs, people will always stay away from the fire.

But after looking at the photos of the crime scene, Tang Ze found that the place where Koyanagizu Kiriko fell was very close to the fire point, which was why her body was so badly burned.

My dear, there is more to this chapter. Please click on the next page to continue reading. It will be even more exciting later!