"Everyone, these are the colleagues from the Special Investigation Department of the First Division of the Metropolitan Police Department. From today onwards, they will join our Arakawa District Jiaofan Bombing and Murder Investigation Headquarters, and will be responsible for the investigation of this case together. Okay, Now we invite Lin Xiuyi, the head of the Special Investigation Department, to tell you a few words."

"Everyone, I'm Lin Xiuyi from the Special Investigation Department. The two here are my subordinates Nakayama Miki and Urashima Yuto. Now, let's sort out the clues we have so far. The details of the explosion occurred. The time was 7:20 last night, did any suspicious people appear at the explosion site around this time?"

As soon as Lin Xiu finished speaking, a policeman sitting below raised his hand and stood up and said:

"Hi! We investigated the surveillance video of the explosion site and found that 40 minutes before the explosion, that is, around 6:50 last night, a middle-aged woman once carried a handbag into the Jiaofan where the explosion occurred. It wasn't until ten minutes before the explosion, that is, around 7:10 last night, that the woman left Jiaofan."

"Have you figured out the identity of that woman?"

Lin Xiuyi looked at the picture on the projection screen and asked thoughtfully.

"Not yet, we have asked the nearby residents, no one knows the woman, and I believe she should be the suspect we are looking for!"

"Wait a minute, how likely do you think the suspect who planned the bombing would go to deliver the bomb himself?"

"this?"

"Continue to track down this clue, and if you find anything, report it to me at any time!"

"Hey! I see!"

"Next, in terms of social relations of the victim Yano Kazuki, how are his personal relationships?"

"Hey! The victim Yano Ikki has a good reputation among the surrounding residents, and he gets along very well with his colleagues. As for the relationship, we asked the colleagues of the deceased before he died. It seems that the deceased had no lover or girlfriend, and he usually worked. After the end, he always likes to be alone, and the deceased once won the Superintendent of Police Award for saving a child who fell into the water!"

"That is to say, he has been reported to the newspapers or to the television? It is worth noting that!"

"As for identification, have you found out the source of the bomb that exploded?"

"On this point, we have found that the main explosive component of the bomb is ammonium nitrate. As for the detonating device, it should be a simple remote control detonating device modified from a mobile phone. This kind of bomb can be completed without much high technology and technology. It's also possible that the drawings or something was found on the Internet. So, there are no clues in this regard for the time being!"

...

Just after Lin Xiuyi roughly asked the people in the first department about the situation related to the case, the scene fell into silence again.

"Then...Is there anything else the Aso Police Department has to add?"

"Uh... no, you have already asked very carefully!"

"Then... how about we go to the scene and take a look at the scene now?"

"Eh? Okay, no problem! I'll follow your orders! That... shall we go now?"

"No, just a few of us will go and have a look. Everyone already understands what they have to do, but there are too few clues, which is not conducive to our next search work! So, I still think about the incident. Check it out nearby!"

"Okay, no problem at all, just do as you say!"

Aso Kosuke responded to Lin Xiuyi with kindness, but Miki saw the look of relief on the other side's face, so she knew that the other side was probably pinning all hope of solving the case on her own police department this time, right?

...

After the case analysis meeting.

Lin Xiuyi and his subordinates left the Metropolitan Police Department in Kosuke Aso's car and went to the crime scene in Arakawa District. Along the way, Aso Kosuke began to ask Lin Xiuyi about the special search department from time to time.

"That...the Forest Police Department! Your Special Investigation Department seems to have been involved in the investigation of the Black Death case on the dark web! In fact, I also heard about that case when I was in the Criminal Division of the Shinjuku Central Police Station. The largest criminal case! You must have been very hard at the time!"

"It's okay! In fact, we have been in contact with suspects through the Internet. Until the last time we closed the Internet, we gradually caught the main leaders of the Black Death organization from the United States and Thailand. I think this is probably That’s what makes cybercriminal cases special!”

"Eh? It sounds so complicated. If I have the chance, I'll have to ask it carefully!"

"Not to mention asking for advice, the Aso Police Department is too polite!"

...

The car drove all the way into the crime scene in Arakawa District. When everyone got out of the car, there was still a messy scene~lightnovelpub.net~ Outside the police cordon set up by the Metropolitan Police Department, you can also Seeing that bouquets and offerings from someone who didn't know were placed under the telephone poles on the roadside, it seemed that they were sent to commemorate the murdered Yano Ikki.

"The surveillance footage showed that the mysterious woman came from this road, but when she left, she walked on a different road."

Standing at the intersection, Aso Kosuke pointed to different directions to introduce Lin Xiuyi. Lin Xiuyi looked in the direction of Aso's finger, and then pointed to the direction of the woman under surveillance and said:

"Let's go over here first! Maybe you'll find something!"

As soon as Lin Xiu determined the direction, he walked in front alone, Miki and Urashima saw it and hurriedly followed! In the end, Kosuke Aso saw that everyone was going there, so he followed behind.

Lin Xiuyi walked along this street. It was a street leading to a residential area. After a while, Lin Xiuyi passed a commercial street. He looked at the surrounding environment, then took out his mobile phone to find a nearby map and said.

"That... there seems to be a school, a park, and a shrine at the end of the road! Since no one near the crime scene knows the lady, it means that the other party doesn't live nearby. It could be a passerby passing by."

"But... if it was a passerby, how would we find this person? It feels like looking for a needle in a haystack!"

"But she appeared at 6:50 in the evening. At that time, most office workers should still be on their way home! And if she was a housewife, she should be staying at home for the family at that time. It's dinner preparation. So, if a woman comes to a residential area at 6:50 pm, there must be some reason why she has to come here!"