Japan - Miyazawa family of 4 murdered, Setagaya, Tokyo, 30 Dec 2000 #3

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Right, like… if you’re so sure you’re going to be under the cover of darkness for your escape, or you’re local and can make it back home undetected, why leave absolutely everything behind besides your shoes, including your bag? Why go to the trouble of all of that if you’re just around the corner?
To me, it says one of a few things…

1. He had to travel back to where he lived and would likely be seen by some or several people on the way, so he dumped it all in favour of a cleaner appearance to make it back.
2. He was confident that he wouldn’t be found even with the mountain of evidence he left, so he changed and just left it all there. This aligns more with the leaving Japan soon after theory.
3. He didn’t plan for the murder to be as brutal and bloody as it was so had no choice as everything was splashed with or soaked in blood and could leave a trail.

I’m sure there are more points other people could add here that I haven’t thought about…

Since he had a bag, and it wasn’t that small either from what I’ve seen, even if he was going to change out of his clothes… why not pack them in your bag and take them? Why leave them all there? I refer back to my 3 points when I think about this question.

Any other ideas…?
One other option, he woke up after his couch nap and realized it was later/earlier than he wanted, panicked and just got the hell out of there as quick as possible.

Though not sure what he would be panicking about as again, it's not like he was being sneaky sneaky or cared too much about killing people who came across him.
 
One other option, he woke up after his couch nap and realized it was later/earlier than he wanted, panicked and just got the hell out of there as quick as possible.

Though not sure what he would be panicking about as again, it's not like he was being sneaky sneaky or cared too much about killing people who came across him.
Right, I believe the nap was speculated upon from previous posts and in dramatisations of the whole event but never confirmed…

Perhaps he just didn’t care and went into the whole thing expecting to be caught anyway? So what the hell, who cares what he leaves behind because he’s for sure going to be caught. I wonder if he maybe had this attitude… and just got extremely, extremely lucky…

I’ve read posts from @Incoherent and now you about it being unlikely he used public transport due to the CCTV and the first trains not starting until around 5am, plus the very noticeable sweater he was speculated to have stolen and worn and the injuries to his hands. He’d stand out to someone surely…

So here I think… if he possibly wasn’t local due to his dumping of clothing and bag for the need to travel and look cleaner, and he didn’t use public transport due to the above, then how did he get home… using a bicycle with injured hands? It would only take him so far… Tokyo is huge. So maybe then a car? Did he drive back home or to the base in a car, or get picked in one…?
 
So maybe then a car? Did he drive back home or to the base in a car, or get picked in one…?
My mind tends towards either:
A) He lived local and just went home
B) He drove home

If A, given what I've learned recently from other crimes committed by kids in Japan, it is not impossible for a parent to put two and two together and simply stay quiet about it.

If B, it is doubtful in my mind that he is a teenager. Even today, car ownership in Tokyo is nowhere near what it is in the UK or US. Many people rent a car when they need one, and the concept of buying your child a car is not really a thing, I'm assuming less so in 2000.
 
My mind tends towards either:
A) He lived local and just went home
B) He drove home

If A, given what I've learned recently from other crimes committed by kids in Japan, it is not impossible for a parent to put two and two together and simply stay quiet about it.

If B, it is doubtful in my mind that he is a teenager. Even today, car ownership in Tokyo is nowhere near what it is in the UK or US. Many people rent a car when they need one, and the concept of buying your child a car is not really a thing, I'm assuming less so in 2000.
In the case of A, how would he get his injuries tended to without being reported? Or how long did he have to stay inside to not be found by police during the firestorm of events afterwards? Would he need to treat the wounds himself and essentially just not go outdoors during daylight hours for a few months?

As for B, I wonder the rules surrounding this on an US air force base. I’m not from the US but I’ve always seen it to be more common for families to get their children a car in their later teenage years. But I don’t know the rules surrounding this if driving out in Tokyo, or what it would mean about a license etc…

As for your point about parents keeping quiet about their children being involved in crimes I do believe that has happened in this case. I believe someone, at least one person likely in his family, either knows or had huge suspicions and has decided to stay quiet about it…
 
Right, I believe the nap was speculated upon from previous posts and in dramatisations of the whole event but never confirmed…

Perhaps he just didn’t care and went into the whole thing expecting to be caught anyway? So what the hell, who cares what he leaves behind because he’s for sure going to be caught. I wonder if he maybe had this attitude… and just got extremely, extremely lucky…

I’ve read posts from @Incoherent and now you about it being unlikely he used public transport due to the CCTV and the first trains not starting until around 5am, plus the very noticeable sweater he was speculated to have stolen and worn and the injuries to his hands. He’d stand out to someone surely…

So here I think… if he possibly wasn’t local due to his dumping of clothing and bag for the need to travel and look cleaner, and he didn’t use public transport due to the above, then how did he get home… using a bicycle with injured hands? It would only take him so far… Tokyo is huge. So maybe then a car? Did he drive back home or to the base in a car, or get picked in one…?

It is not an impossible version. It could be a young woman waiting for him in a car, too. Also, could it be so that he called her to pick him up? I wonder if the woman submitting the tip about a man who jumped in front of her car was ever traced back?

About the sanitary products - I never saw Japanese ones but I am expert on baby diapers from different countries. The Japanese ones are top class, the best of the best both in softness and absorbency. If the same can be said about Japanese feminine products, then I understand why the killer used them. The knowledge would come not from US army but from living in a household with a Japanese mother, sister or girlfriend.
 
As I have said earlier, he could very well be a rando Japanese instead of a rando military brat.

The only problems are all the stuff he left behind, and his exit from the house becomes even more unclear. He couldn’t have left in the middle of the night if he was planning to use public transport, so presumably he also used a car or something to get away. But if he was gonna use a car, why did he need to drop behind all of his stuff? I don’t think it was pre planned, so why drop stuff like the hip bag?

Its a major sticking point in my view.

It's possible he could have stayed until a time around 5am, and then boarded public transport. I meant to say he just made sure to leave while it's still relatively "dark out".

Unsure why he left all his clothes behind and decided to wear Mikio's clothes. If his clothes had blood stains on them, then maybe that's a reason why. I'm not sure if this was noted in the investigation though. The sand was said to originate from the Mojave Desert or Kanagawa, right? Kanagawa has lots of beaches. Not to mention the other things in his hip bag that originated from around the area. The whole military scenario seems less likely to me, I feel that the TMPD would've probably already checked out the Yokota base, the yearbooks, and even the records of the children who left the base/country after the murders.

I don't think he used a car. I know a witness said they saw a car near the Miyazawa house that night, but I don't think the car is related to the murders.
 
Since he had a bag, and it wasn’t that small either from what I’ve seen, even if he was going to change out of his clothes… why not pack them in your bag and take them? Why leave them all there? I refer back to my 3 points when I think about this question.

Any other ideas…?

idk the bag doesn't seem big enough to fit all those clothes...?

Picture is of the bag that he had, and the bag seems rather small.
 
I've read on some sites that the killer took all of the family's “Happy New Year” greeting cards?
Does anyone know if this is true or not?
 
It's possible he could have stayed until a time around 5am, and then boarded public transport. I meant to say he just made sure to leave while it's still relatively "dark out".

Unsure why he left all his clothes behind and decided to wear Mikio's clothes. If his clothes had blood stains on them, then maybe that's a reason why. I'm not sure if this was noted in the investigation though. The sand was said to originate from the Mojave Desert or Kanagawa, right? Kanagawa has lots of beaches. Not to mention the other things in his hip bag that originated from around the area. The whole military scenario seems less likely to me, I feel that the TMPD would've probably already checked out the Yokota base, the yearbooks, and even the records of the children who left the base/country after the murders.

I don't think he used a car. I know a witness said they saw a car near the Miyazawa house that night, but I don't think the car is related to the murders.
Hmm…
It would mean he boarded and travelled on a train, or trains, in central Tokyo wearing a sweater that had the ABC’s written on it, with injured hands that are likely bandaged, and managed to avoid all CCTV and not look suspicious to anyone…
I can appreciate it would be early morning… but there would be people everywhere… it’s Tokyo.
I would say it’s more likely the TMPD checked this method much more throughly and could do so quickly, than approaching and questioning an Air Force base right from the get-go… JMO…

idk the bag doesn't seem big enough to fit all those clothes...?

Picture is of the bag that he had, and the bag seems rather small.
The size of the bag in some images is deceiving but it was in fact sizeable… I think he could have rolled up the clothing and stuffed it in there potentially considering it was all light weight fabric. It looks smaller because the killers waist was very small and the belt was tightened.

IMG_3464.jpeg
 
About the sanitary products - I never saw Japanese ones but I a

Hmm…
It would mean he boarded and travelled on a train, or trains, in central Tokyo wearing a sweater that had the ABC’s written on it, with injured hands that are likely bandaged, and managed to avoid all CCTV and not look suspicious to anyone…
I can appreciate it would be early morning… but there would be people everywhere… it’s Tokyo.
I would say it’s more likely the TMPD checked this method much more throughly and could do so quickly, than approaching and questioning an Air Force base right from the get-go… JMO…


The size of the bag in some images is deceiving but it was in fact sizeable… I think he could have rolled up the clothing and stuffed it in there potentially considering it was all light weight fabric. It looks smaller because the killers waist was very small and the belt was tightened.

View attachment 519392
Something that just hit me that hasn't before. That scarf is a very similar style to the type worn by high school girls in Japan. Could it point to a high-school aged sister in the same household?
 
Something that just hit me that hasn't before. That scarf is a very similar style to the type worn by high school girls in Japan. Could it point to a high-school aged sister in the same household?
Would her DNA be found on it if it were his sisters or girlfriends though? Did the scarf get checked too? I know the bag did… and it was confirmed only his DNA was found on it and no one else’s… If the scarf wasn’t his I feel it would show something?
 
It's possible he could have stayed until a time around 5am, and then boarded public transport. I meant to say he just made sure to leave while it's still relatively "dark out".

Unsure why he left all his clothes behind and decided to wear Mikio's clothes. If his clothes had blood stains on them, then maybe that's a reason why. I'm not sure if this was noted in the investigation though. The sand was said to originate from the Mojave Desert or Kanagawa, right? Kanagawa has lots of beaches. Not to mention the other things in his hip bag that originated from around the area. The whole military scenario seems less likely to me, I feel that the TMPD would've probably already checked out the Yokota base, the yearbooks, and even the records of the children who left the base/country after the murders.

I don't think he used a car. I know a witness said they saw a car near the Miyazawa house that night, but I don't think the car is related to the murders.
Since the killer had cash from the house, he could afford a taxi. He might have walked a short distance first to catch a cab away from the scene, then taken a short ride and switched to another taxi to avoid detection. Sitting behind the driver, he could hide his bandaged wrist by pulling his sleeve over it. The cost, even at night, wouldn't be too great. Here are some estimates for Tokyo taxi fares in 2000 and today for comparison. Suppose he first went to Shibuya, just for the sake of example.
Initial fare: ¥660 for the first 2 km
Total fare: ¥660 + ¥1430 = ¥2090
Surcharge: 25% of ¥2090 ≈ ¥522
Total cost: ¥2090 + ¥522 ≈ ¥2612
In 2000, the exchange rate was approximately 1 USD ≈ 105 JPY.
Fare in USD (2000): ¥2600 / 105 ≈ $24.76
Fare in USD (2024): ¥2600 / 140 ≈ $18.57
The distance between Setagaya and Koto is approximately 15-20 km. From Setagaya to Koto:
Total fare: ≈ ¥6183
Fare in USD (2000): ≈ $58.89
Fare in USD (2024): ≈ $44.16

These are just examples. The killer could have combined taking a taxi and a train to escape detection. Taxis in Tokyo back in 2000 generally did not have cameras. It wasn't common at that time.
 
Since the killer had cash from the house, he could afford a taxi. He might have walked a short distance first to catch a cab away from the scene, then taken a short ride and switched to another taxi to avoid detection. Sitting behind the driver, he could hide his bandaged wrist by pulling his sleeve over it. The cost, even at night, wouldn't be too great. Here are some estimates for Tokyo taxi fares in 2000 and today for comparison. Suppose he first went to Shibuya, just for the sake of example.
Initial fare: ¥660 for the first 2 km
Total fare: ¥660 + ¥1430 = ¥2090
Surcharge: 25% of ¥2090 ≈ ¥522
Total cost: ¥2090 + ¥522 ≈ ¥2612
In 2000, the exchange rate was approximately 1 USD ≈ 105 JPY.
Fare in USD (2000): ¥2600 / 105 ≈ $24.76
Fare in USD (2024): ¥2600 / 140 ≈ $18.57
The distance between Setagaya and Koto is approximately 15-20 km. From Setagaya to Koto:
Total fare: ≈ ¥6183
Fare in USD (2000): ≈ $58.89
Fare in USD (2024): ≈ $44.16

These are just examples. The killer could have combined taking a taxi and a train to escape detection. Taxis in Tokyo back in 2000 generally did not have cameras. It wasn't common at that time.
I remember there was a story of 3 men who got into a taxi close to the house during the early hours, and initially it was reported that blood was left behind… and then it turned out to be chocolate instead… but that taxi driver reported his passengers.

Do you think that taxi drivers on that night were urged to report any passengers in the early hours from near or around the house by the TMPD, and do you think the killer could escape detection somehow even if he did get a taxi?
Did he call a taxi via cellphone or did he find one roaming around and hail it down? Would a taxi driver who picked up a lone man in an ABC sweater in the early hours of Sunday morning remember this or would it slip his mind, even if he’s been told to recall passengers he picked up? Would a taxi company go back through call logs for taxis during the early hours that have been called to near or around the house?

Appreciate your thoughts.
 
Some people who lived in Tokyo in 2000 have said that cctv coverage was not advanced enough to capture everyone entering and exiting the stations. Today, the system has much better coverage, but back then, it’s uncertain how effective the surveillance was. This leaves a small but still possible chance that the killer, by sheer luck, was not captured or identified in the video footage.
 
Some people who lived in Tokyo in 2000 have said that cctv coverage was not advanced enough to capture everyone entering and exiting the stations. Today, the system has much better coverage, but back then, it’s uncertain how effective the surveillance was. This leaves a small but still possible chance that the killer, by sheer luck, was not captured or identified in the video footage.
I hesitate to believe this because the domestic terrorism Tokyo subway sarin gas attacks that killed 14 and injured over 1000 occurred in 1995. It attributed to the removal of all trash cans in Tokyo so that nothing could be hidden around train stations. If anything, I would say CCTV coverage in and around train stations only increased and improved post attack. But of course, it is always possible the killer boarded and was not detected. He seems to have been a very lucky man anyway.
 
I remember there was a story of 3 men who got into a taxi close to the house during the early hours, and initially it was reported that blood was left behind… and then it turned out to be chocolate instead… but that taxi driver reported his passengers.

Do you think that taxi drivers on that night were urged to report any passengers in the early hours from near or around the house by the TMPD, and do you think the killer could escape detection somehow even if he did get a taxi?
Did he call a taxi via cellphone or did he find one roaming around and hail it down? Would a taxi driver who picked up a lone man in an ABC sweater in the early hours of Sunday morning remember this or would it slip his mind, even if he’s been told to recall passengers he picked up? Would a taxi company go back through call logs for taxis during the early hours that have been called to near or around the house?

Appreciate your thoughts.
It’s difficult to envision all the possibilities in detail, but I will try. If he did take a taxi for a short distance, it would likely have been from a location that wasn’t isolated; otherwise, the driver might have remembered the encounter. Therefore, he probably walked some distance first and then flagged down a passing cab instead of calling one. Reviewing logs later wouldn’t be very helpful since he was just a passenger, and the driver might not link that location to the news. Since this is just speculation, it would be helpful to know how common or uncommon it is for young men to take cabs early in the morning in Tokyo.

Regarding the sweater, how certain can the police be that it was the only item stolen from Mikio’s wardrobe? It’s possible something else could have been taken. The next door siblings, who had recently returned from overseas, might not have been familiar with the full set of clothes Mikio had. Since the police have only the relatives' input, we can’t rule out the possibility of other items being stolen. It’s important to know whether the TMPD is absolutely certain that nothing else was taken or if they lack enough information to confirm if other items were stolen.

As for the mode of transportation, while it’s unlikely the killer used a delta-plane or boat, I wouldn’t completely rule out other types of transport. There’s nothing strictly impossible about train, cab or something else. JMO.
 
I hesitate to believe this because the domestic terrorism Tokyo subway sarin gas attacks that killed 14 and injured over 1000 occurred in 1995. It attributed to the removal of all trash cans in Tokyo so that nothing could be hidden around train stations. If anything, I would say CCTV coverage in and around train stations only increased and improved post attack. But of course, it is always possible the killer boarded and was not detected. He seems to have been a very lucky man anyway.
I’m sure Tokyo’s metro system is equipped to an exceptional standard. No question about it. I’m talking about the capturing detailed images of a killer’s face and body, including specific items like Slazenger shoes. Do you have any examples of CCTV recordings from metro systems or shops that show how detailed the facial images could be back in 2000?
 
There’s something puzzling about the fanny pack and the car. If the killer arrived by car, why would he need a fanny bag? One possible explanation, though purely speculative, is that he intended to use the bag to carry something, like heaps of cash, and anticipated needing to climb. This suggests planning of the invasion. It could also imply that he didn’t use a car but arrived on foot or by bike, as a fanny bag would be more practical for hands free movement and would be easier to carry on the back rather than the front.
 
It’s difficult to envision all the possibilities in detail, but I will try. If he did take a taxi for a short distance, it would likely have been from a location that wasn’t isolated; otherwise, the driver might have remembered the encounter. Therefore, he probably walked some distance first and then flagged down a passing cab instead of calling one. Reviewing logs later wouldn’t be very helpful since he was just a passenger, and the driver might not link that location to the news. Since this is just speculation, it would be helpful to know how common or uncommon it is for young men to take cabs early in the morning in Tokyo.

Regarding the sweater, how certain can the police be that it was the only item stolen from Mikio’s wardrobe? It’s possible something else could have been taken. The next door siblings, who had recently returned from overseas, might not have been familiar with the full set of clothes Mikio had. Since the police have only the relatives' input, we can’t rule out the possibility of other items being stolen. It’s important to know whether the TMPD is absolutely certain that nothing else was taken or if they lack enough information to confirm if other items were stolen.

As for the mode of transportation, while it’s unlikely the killer used a delta-plane or boat, I wouldn’t completely rule out other types of transport. There’s nothing strictly impossible about train, cab or something else. JMO.
Thank you for your thoughts @Sor Juana!

Regarding your first point, just how far is he expected to walk before hailing the taxi? From what I understand, though the location of the house was somewhat isolated, the area the family lived was not. So for the point about hailing a taxi from an area not “isolated” it seems he would only need to walk 10 minutes down the street.
However, if we are talking Setagaya as a whole, from my (albeit limited) knowledge of Tokyo… he could have walked hours and still been in Setagaya. If taxi drivers were directed to recall passengers picked up in Setagaya I wonder just how far an injured man, who had shed his clothes, is expected to walk on a winter’s night before hailing a taxi down to be far away enough from the scene to not ring a bell. After all it is named the Setagaya Family Murders. Would he need to walk out of the city entirely before finding the taxi?

About the sweater I also thought the same. Just how sure could the TMPD and family be that he did take and wear that sweater?
Well, from what we do know, he took off his t-shirt and jacket. He could have perhaps worn an undershirt but he obviously wasn’t going outside just in that. While Ann, her husband and kid, had only returned earlier that year to the house (around Spring from what I recall) Haruko had been there the entire time. Yasuko had run the cram school out of her side of the house, so it is only to be expected Haruko had a close relationship with her daughter and the grandkids. There are photos out there of Mikio in that same ABC sweater with Haruko. If I had to guess, she was the one to report that sweater missing. The TMPD would obviously have no idea. The other part of the family may have had ideas too, even though they had only been back less than a year, depending on how much time they spent together.

I do agree it is not impossible that he could have escaped via taxi (less likely) or train (more likely) only that after this long there has been nothing that has led the TMPD to announce they suspect he did. To me that only leaves he escaped via foot or bike, or took a car.
I’m sure Tokyo’s metro system is equipped to an exceptional standard. No question about it. I’m talking about the capturing detailed images of a killer’s face and body, including specific items like Slazenger shoes. Do you have any examples of CCTV recordings from metro systems or shops that show how detailed the facial images could be back in 2000?
How I wish I did, but I don’t! If anyone here that lives in Japan could chime in that would be very interesting. But from the pictures I’ve seen of that sweater, it is not exactly hard to spot in a crowd if he did indeed wear it.
And if he didn’t, what did he wear I wonder?
 

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