Trashed Umbrella

We saw this umbrella in the trashcan by where we walk when we are out by the river. The can always gets a cursory (sometimes a little more thorough) sniff, so I noticed the umbrella right off. This is as we found it. I have no idea what was wrong with it (and did not take it out to see). I thought it was interesting how it was hooked over the edge of the trashcan and not just thrown in. Was someone coming back for it later or was it just picked up and this was someone's way of saying 'I found your umbrella, let me just put it right here for you'? A little odd, but interesting.