Diamonds, precious metals valued at hundreds of millions of yen stolen from Tokyo residence

If it's a "luxury apartment building," you would think security personnel would be monitoring video surveillance of entrances and hallways.

Safe deposit boxes are very much under the control of the banks and the banks are controlled by the government, in a crisis would you really trust either of them? If so ask the Cypriots what happened in the financial crash and the EU forced the government to close the banks and no one could access their own money!

I would think insurance fraud would be the first thing police might look for. And who else knew he had all those jewels at home.

I have noticed that home break-ins of homes tend to occur when the residents are known to keep large amounts of cash or valuables at home. Seems to me that this is mostly a cultural thing. Some cultures like to keep valuables at home, and others keep them in safe deposit boxes in banks, with additional insurance.

the front door had been forcibly opened by some sort of tool

If it was a "luxury apartment" the noise was made, and you're saying nobody heard or saw the ruckus in a "luxury apartment" with all those inquiring minds?

Well I guess Police said street surveillance camera footage may provide facial details and a ID on the vehicle.

Something smells fishy. If a person has several hundreds of millions of yen worth of jewelry, s/he can definitely afford a safety deposit box, or better yet, a security guard outside their door for 1,500 yen per hour when they're not home.

Most likely, and who else suspects the gang of 4 are his friends......

Or their kids.

Banks do have Save Deposits Boxes, But he may not want to pay for keeping his valuables safe. If he has insurance on his stuff he'll never receive full value for the items stolen, and if any cash was taken that's a loss. Oh well what can you say to the guy except Hope you learned a lesson here.

He should have had a safe and insurance.

Not useless, they are a way for anyone to preserve some of the value of their savings and prevent the government stealthily stealing it through deliberately targeting inflation as a monetary policy. The only people who want inflation are politicians and bankers, one makes money out of it and the other can borrow and squander more because of it. I will let you work out which is which.

Gold is a currency that a politician can’t magically invent more of and so depreciate its value like they all do with fiat currency.

A rich moron, I wonder if this moron had insurance?

Most likely, and who else suspects the gang of 4 are his friends......

A rich moron, I wonder if this moron had insurance?

Who keeps millions of dollars in jewelry in their apartment? And worse, tells people about it? (The thieves obviously knew what they were after.)

A moron.

Who keeps millions of dollars in jewelry in their apartment? And worse, tells people about it? (The thieves obviously knew what they were after.)