Were to report an unsafe sports training facility?

Hi,

So, there’s a place nearby where kids can take private baseball lessons (one-on-one or small group, mainly batting). It seems they were practicing outdoor but moved indoor recently.

I went there with a Japanese friend of mine and his son, as the kid wants to take lessons there.

And, wow, was it an “amazing” experience. Short summary of what I’ve seen while I was there :

* This indoor facility is actually an old warehouse that was probably prefab.
* Holes in the walls and maybe the roof too. The whole place look like it could collapse if the wind’s too strong.
* Main door is difficult to open/close and one-third blocked by a metal curtain that can’t go down fully (the kind you use for garage doors). How can anyone escape in time in case of a fire or earthquake is up to anyone’s guess.
* Part of the cheap wooden ceiling collapsed (you can see a gaping hole and the main roof) and I wouldn’t bet on how long the rest of the ceiling will last
* No emergency exit, because of course.
* Only one obviously very old fire and way too small extinguisher that probably doesn’t work anymore
* For what I’ve seen, no fire alarm or smoke detector
* Seems there’s no first aid kit or AED kit either
* The fuse box is wide open and looks prehistoric
* Power sockets seem on life support
* Dust absolutely freaking everywhere
* Gardening tools (?!) and potentially flammable material in a corner, as it seems the warehouse is also used by someone else

I could still go on but I think it’s enough for you to get the idea.

This freaking place is just one giant accident/tragedy waiting to happen.

Were is it possible to report this sports training “center” and hopefully have health & safety inspectors pay them a visit? Local city hall? Something on the prefecture level?

Thanks!