Driftage

I found a black box at the sea coast near Hiroshima bay. It was wet by sea water and be surrounded by sea sand.
In the bag, there were notes, mobile phone, and cards, etc. There were no money.
I brought it to police box which was there in nearest.
Later, the policeman told me that the owner was old man and be disappearance. I imagined that the old man dropped down to the sea, or be stumble into crime.
It was a bad event for me.